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Refactor
[llpp.git] / link.c
blob66afbbab20d892db753b7ea52518d602c69172c5
1 /* lots of code c&p-ed directly from mupdf */
2 #include <errno.h>
3 #include <stdio.h>
4 #include <ctype.h>
5 #include <string.h>
6 #include <stdlib.h>
7 #include <signal.h>
8 #include <wchar.h>
9
10 #include <unistd.h>
11 #include <pthread.h>
12 #include <sys/time.h>
13 #include <sys/types.h>
14 #include <sys/ioctl.h>
15
16 #ifdef __CYGWIN__
17 #include <cygwin/socket.h> /* FIONREAD */
18 #else
19 #include <spawn.h>
20 #endif
21
22 #include <regex.h>
23 #include <ctype.h>
24 #include <stdarg.h>
25 #include <limits.h>
26
27 #include <GL/gl.h>
28
29 #include <caml/fail.h>
30 #include <caml/alloc.h>
31 #include <caml/memory.h>
32 #include <caml/unixsupport.h>
33
34 #include <fitz.h>
35 #include <mupdf.h>
36 #include <mupdf-internal.h>
37 #include <muxps.h>
38 #include <muxps-internal.h>
39 #include <mucbz.h>
40
41 #include FT_FREETYPE_H
42
43 #define PIGGYBACK
44
45 #ifndef __USE_GNU
46 extern char **environ;
47 #endif
48
49 #define MIN(a,b) ((a) < (b) ? (a) : (b))
50 #define MAX(a,b) ((a) > (b) ? (a) : (b))
51
52 #if defined __GNUC__
53 #define NORETURN_ATTR __attribute__ ((noreturn))
54 #define UNUSED_ATTR __attribute__ ((unused))
55 #define OPTIMIZE_ATTR(n) __attribute__ ((optimize ("O"#n)))
56 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
57 #else
58 #define NORETURN_ATTR
59 #define UNUSED_ATTR
60 #define OPTIMIZE_ATTR(n)
61 #define GCC_FMT_ATTR(a, b)
62 #endif
63
64 #define FMT_s "zu"
65
66 #define FMT_ptr "p"
67 #define FMT_ptr_cast(p) (p)
68 #define FMT_ptr_cast2(p) (p)
69
70 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
71 err (int exitcode, const char *fmt, ...)
72 {
73 va_list ap;
74 int savederrno;
75
76 savederrno = errno;
77 va_start (ap, fmt);
78 vfprintf (stderr, fmt, ap);
79 va_end (ap);
80 fprintf (stderr, ": %s\n", strerror (savederrno));
81 fflush (stderr);
82 _exit (exitcode);
83 }
84
85 static void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
86 errx (int exitcode, const char *fmt, ...)
87 {
88 va_list ap;
89
90 va_start (ap, fmt);
91 vfprintf (stderr, fmt, ap);
92 va_end (ap);
93 fputc ('\n', stderr);
94 fflush (stderr);
95 _exit (exitcode);
96 }
97
98 #ifndef GL_TEXTURE_RECTANGLE_ARB
99 #define GL_TEXTURE_RECTANGLE_ARB 0x84F5
100 #endif
101
102 #ifndef GL_BGRA
103 #define GL_BGRA 0x80E1
104 #endif
105
106 #ifndef GL_UNSIGNED_INT_8_8_8_8
107 #define GL_UNSIGNED_INT_8_8_8_8 0x8035
108 #endif
109
110 #ifndef GL_UNSIGNED_INT_8_8_8_8_REV
111 #define GL_UNSIGNED_INT_8_8_8_8_REV 0x8367
112 #endif
113
114 #if 0
115 #define lprintf printf
116 #else
117 #define lprintf(...)
118 #endif
119
120 #define ARSERT(cond) for (;;) { \
121 if (!(cond)) { \
122 errx (1, "%s:%d " #cond, __FILE__, __LINE__); \
123 } \
124 break; \
125 }
126
127 struct slice {
128 int h;
129 int texindex;
130 };
131
132 struct tile {
133 int x, y, w, h;
134 int slicecount;
135 int sliceheight;
136 struct pbo *pbo;
137 fz_pixmap *pixmap;
138 struct slice slices[1];
139 };
140
141 struct pagedim {
142 int pageno;
143 int rotate;
144 int left;
145 int tctmready;
146 fz_bbox bounds;
147 fz_rect pagebox;
148 fz_rect mediabox;
149 fz_matrix ctm, zoomctm, lctm, tctm;
150 };
151
152 struct slink {
153 fz_bbox bbox;
154 fz_link *link;
155 };
156
157 enum { DPDF, DXPS, DCBZ };
158
159 struct page {
160 int tgen;
161 int sgen;
162 int type;
163 int pageno;
164 int pdimno;
165 fz_text_page *text;
166 fz_text_sheet *sheet;
167 union {
168 void *ptr;
169 pdf_page *pdfpage;
170 xps_page *xpspage;
171 cbz_page *cbzpage;
172 } u;
173 fz_display_list *dlist;
174 int slinkcount;
175 struct slink *slinks;
176 struct mark {
177 int i;
178 fz_text_span *span;
179 } fmark, lmark;
180 void (*freepage) (void *);
181 };
182
183 struct {
184 int type;
185 int sliceheight;
186 struct pagedim *pagedims;
187 int pagecount;
188 int pagedimcount;
189 union {
190 pdf_document *pdf;
191 xps_document *xps;
192 cbz_document *cbz;
193 } u;
194 fz_context *ctx;
195 int w, h;
196
197 int texindex;
198 int texcount;
199 GLuint *texids;
200
201 GLenum texiform;
202 GLenum texform;
203 GLenum texty;
204
205 fz_colorspace *colorspace;
206
207 struct {
208 int w, h;
209 struct slice *slice;
210 } *texowners;
211
212 int rotate;
213 int proportional;
214 int trimmargins;
215 int needoutline;
216 int gen;
217 int aalevel;
218
219 int trimanew;
220 fz_bbox trimfuzz;
221 fz_pixmap *pig;
222
223 pthread_t thread;
224 int cr, cw;
225 FT_Face face;
226
227 void (*closedoc) (void);
228 void (*freepage) (void *);
229
230 char *trimcachepath;
231
232 int pbo_usable;
233 void (*glBindBufferARB) (GLenum, GLuint);
234 GLboolean (*glUnmapBufferARB) (GLenum);
235 void *(*glMapBufferARB) (GLenum, GLenum);
236 void (*glBufferDataARB) (GLenum, GLsizei, void *, GLenum);
237 void (*glGenBuffersARB) (GLsizei, GLuint *);
238 void (*glDeleteBuffersARB) (GLsizei, GLuint *);
239 } state;
240
241 struct pbo {
242 GLuint id;
243 void *ptr;
244 size_t size;
245 };
246
247 static void UNUSED_ATTR debug_rect (const char *cap, fz_rect r)
248 {
249 printf ("%s(rect) %.2f,%.2f,%.2f,%.2f\n", cap, r.x0, r.y0, r.x1, r.y1);
250 }
251
252 static void UNUSED_ATTR debug_bbox (const char *cap, fz_bbox r)
253 {
254 printf ("%s(bbox) %d,%d,%d,%d\n", cap, r.x0, r.y0, r.x1, r.y1);
255 }
256
257 static void UNUSED_ATTR debug_matrix (const char *cap, fz_matrix m)
258 {
259 printf ("%s(matrix) %.2f,%.2f,%.2f,%.2f %.2f %.2f\n", cap,
260 m.a, m.b, m.c, m.d, m.e, m.f);
261 }
262
263 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
264
265 static void lock (const char *cap)
266 {
267 int ret = pthread_mutex_lock (&mutex);
268 if (ret) {
269 errx (1, "%s: pthread_mutex_lock: %s", cap, strerror (ret));
270 }
271 }
272
273 static void unlock (const char *cap)
274 {
275 int ret = pthread_mutex_unlock (&mutex);
276 if (ret) {
277 errx (1, "%s: pthread_mutex_unlock: %s", cap, strerror (ret));
278 }
279 }
280
281 static int trylock (const char *cap)
282 {
283 int ret = pthread_mutex_trylock (&mutex);
284 if (ret && ret != EBUSY) {
285 errx (1, "%s: pthread_mutex_trylock: %s", cap, strerror (ret));
286 }
287 return ret == EBUSY;
288 }
289
290 static void *parse_pointer (const char *cap, const char *s)
291 {
292 int ret;
293 void *ptr;
294
295 ret = sscanf (s, "%" FMT_ptr, FMT_ptr_cast (&ptr));
296 if (ret != 1) {
297 errx (1, "%s: cannot parse pointer in `%s'", cap, s);
298 }
299 return ptr;
300 }
301
302 static double now (void)
303 {
304 struct timeval tv;
305
306 if (gettimeofday (&tv, NULL)) {
307 err (1, "gettimeofday");
308 }
309 return tv.tv_sec + tv.tv_usec*1e-6;
310 }
311
312 static int hasdata (void)
313 {
314 int ret, avail;
315 ret = ioctl (state.cr, FIONREAD, &avail);
316 if (ret) err (1, "hasdata: FIONREAD error ret=%d", ret);
317 return avail > 0;
318 }
319
320 CAMLprim value ml_hasdata (value fd_v)
321 {
322 CAMLparam1 (fd_v);
323 int ret, avail;
324
325 ret = ioctl (Int_val (fd_v), FIONREAD, &avail);
326 if (ret) uerror ("ioctl (FIONREAD)", Nothing);
327 CAMLreturn (Val_bool (avail > 0));
328 }
329
330 static void readdata (void *p, int size)
331 {
332 ssize_t n;
333
334 again:
335 n = read (state.cr, p, size);
336 if (n < 0) {
337 if (errno == EINTR) goto again;
338 err (1, "read (req %d, ret %zd)", size, n);
339 }
340 if (n - size) {
341 if (!n) errx (1, "EOF while reading");
342 errx (1, "read (req %d, ret %zd)", size, n);
343 }
344 }
345
346 static void writedata (char *p, int size)
347 {
348 char buf[4];
349 ssize_t n;
350
351 buf[0] = (size >> 24) & 0xff;
352 buf[1] = (size >> 16) & 0xff;
353 buf[2] = (size >> 8) & 0xff;
354 buf[3] = (size >> 0) & 0xff;
355
356 n = write (state.cw, buf, 4);
357 if (n != 4) {
358 if (!n) errx (1, "EOF while writing length");
359 err (1, "write %zd", n);
360 }
361
362 n = write (state.cw, p, size);
363 if (n - size) {
364 if (!n) errx (1, "EOF while writing data");
365 err (1, "write (req %d, ret %zd)", size, n);
366 }
367 }
368
369 static int readlen (void)
370 {
371 unsigned char p[4];
372
373 readdata (p, 4);
374 return (p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3];
375 }
376
377 static void GCC_FMT_ATTR (1, 2) printd (const char *fmt, ...)
378 {
379 int size = 200, len;
380 va_list ap;
381 char *buf;
382
383 buf = malloc (size);
384 for (;;) {
385 if (!buf) err (1, "malloc for temp buf (%d bytes) failed", size);
386
387 va_start (ap, fmt);
388 len = vsnprintf (buf, size, fmt, ap);
389 va_end (ap);
390
391 if (len > -1 && len < size) {
392 writedata (buf, len);
393 break;
394 }
395
396 if (len > -1) {
397 size = len + 1;
398 }
399 else {
400 size *= 2;
401 }
402 buf = realloc (buf, size);
403 }
404 free (buf);
405 }
406
407 static void closepdf (void)
408 {
409 if (state.u.pdf) {
410 pdf_close_document (state.u.pdf);
411 state.u.pdf = NULL;
412 }
413 }
414
415 static void closexps (void)
416 {
417 if (state.u.xps) {
418 xps_close_document (state.u.xps);
419 state.u.xps = NULL;
420 }
421 }
422
423 static void closecbz (void)
424 {
425 if (state.u.cbz) {
426 cbz_close_document (state.u.cbz);
427 state.u.cbz = NULL;
428 }
429 }
430
431 static void freepdfpage (void *ptr)
432 {
433 pdf_free_page (state.u.pdf, ptr);
434 }
435
436 static void freeemptyxxxpage (void *ptr)
437 {
438 (void) ptr;
439 }
440
441 static void freexpspage (void *ptr)
442 {
443 xps_free_page (state.u.xps, ptr);
444 }
445
446 static void freecbzpage (void *ptr)
447 {
448 cbz_free_page (state.u.cbz, ptr);
449 }
450
451 static void openxref (char *filename, char *password)
452 {
453 int i, len;
454
455 for (i = 0; i < state.texcount; ++i) {
456 state.texowners[i].w = -1;
457 state.texowners[i].slice = NULL;
458 }
459
460 if (state.closedoc) state.closedoc ();
461
462 len = strlen (filename);
463
464 state.type = DPDF;
465 if (len > 4) {
466 char ext[4];
467
468 ext[0] = tolower ((int) filename[len-3]);
469 ext[1] = tolower ((int) filename[len-2]);
470 ext[2] = tolower ((int) filename[len-1]);
471
472 /**/ if (ext[0] == 'x' && ext[1] == 'p' && ext[2] == 's') {
473 state.type = DXPS;
474 }
475 else if (ext[0] == 'c' && ext[1] == 'b' && ext[2] == 'z') {
476 state.type = DCBZ;
477 }
478 }
479
480 if (state.pagedims) {
481 free (state.pagedims);
482 state.pagedims = NULL;
483 }
484 state.pagedimcount = 0;
485
486 fz_set_aa_level (state.ctx, state.aalevel);
487 switch (state.type) {
488 case DPDF:
489 state.u.pdf = pdf_open_document (state.ctx, filename);
490 if (pdf_needs_password (state.u.pdf)) {
491 int okay = pdf_authenticate_password (state.u.pdf, password);
492 if (!okay) {
493 errx (1, "invalid password");
494 }
495 }
496 state.pagecount = pdf_count_pages (state.u.pdf);
497 state.closedoc = closepdf;
498 state.freepage = freepdfpage;
499 break;
500
501 case DXPS:
502 state.u.xps = xps_open_document (state.ctx, filename);
503 state.pagecount = xps_count_pages (state.u.xps);
504 state.closedoc = closexps;
505 state.freepage = freexpspage;
506 break;
507
508 case DCBZ:
509 state.u.cbz = cbz_open_document (state.ctx, filename);
510 state.pagecount = cbz_count_pages (state.u.cbz);
511 state.closedoc = closecbz;
512 state.freepage = freecbzpage;
513 break;
514 }
515 }
516
517 static void pdfinfo (void)
518 {
519 if (state.type == DPDF) {
520 pdf_obj *infoobj;
521
522 printd ("info PDF version\t%d.%d",
523 state.u.pdf->version / 10, state.u.pdf->version % 10);
524
525 infoobj = pdf_dict_gets (state.u.pdf->trailer, "Info");
526 if (infoobj) {
527 int i;
528 char *s;
529 char *items[] = { "Title", "Author", "Creator",
530 "Producer", "CreationDate" };
531
532 for (i = 0; i < sizeof (items) / sizeof (*items); ++i) {
533 pdf_obj *obj = pdf_dict_gets (infoobj, items[i]);
534 s = pdf_to_utf8 (state.u.pdf, obj);
535 if (*s) {
536 if (i == 0) {
537 printd ("title %s", s);
538 }
539 printd ("info %s\t%s", items[i], s);
540 }
541 fz_free (state.ctx, s);
542 }
543 }
544 printd ("infoend");
545 }
546 }
547
548 static void unlinktile (struct tile *tile)
549 {
550 int i;
551
552 for (i = 0; i < tile->slicecount; ++i) {
553 struct slice *s = &tile->slices[i];
554
555 if (s->texindex != -1) {
556 if (state.texowners[s->texindex].slice == s) {
557 state.texowners[s->texindex].slice = NULL;
558 }
559 }
560 }
561 }
562
563 static void freepage (struct page *page)
564 {
565 if (page->text) {
566 fz_free_text_page (state.ctx, page->text);
567 }
568 if (page->sheet) {
569 fz_free_text_sheet (state.ctx, page->sheet);
570 }
571 if (page->slinks) {
572 free (page->slinks);
573 }
574 page->freepage (page->u.ptr);
575 fz_free_display_list (state.ctx, page->dlist);
576 free (page);
577 }
578
579 static void freetile (struct tile *tile)
580 {
581 unlinktile (tile);
582 if (!tile->pbo) {
583 #ifndef PIGGYBACK
584 fz_drop_pixmap (state.ctx, tile->pixmap);
585 #else
586 if (state.pig) {
587 fz_drop_pixmap (state.ctx, state.pig);
588 }
589 state.pig = tile->pixmap;
590 #endif
591 }
592 else {
593 free (tile->pbo);
594 fz_drop_pixmap (state.ctx, tile->pixmap);
595 }
596 free (tile);
597 }
598
599 #ifdef __ALTIVEC__
600 #include <altivec.h>
601
602 static int cacheline32bytes;
603
604 static void __attribute__ ((constructor)) clcheck (void)
605 {
606 char **envp = environ;
607 unsigned long *auxv;
608
609 while (*envp++);
610
611 for (auxv = (unsigned long *) envp; *auxv != 0; auxv += 2) {
612 if (*auxv == 19) {
613 cacheline32bytes = auxv[1] == 32;
614 return;
615 }
616 }
617 }
618
619 static void OPTIMIZE_ATTR (3) clearpixmap (fz_pixmap *pixmap)
620 {
621 size_t size = pixmap->w * pixmap->h * pixmap->n;
622 if (cacheline32bytes && size > 32) {
623 intptr_t a1, a2, diff;
624 size_t sizea, i;
625 vector unsigned char v = vec_splat_u8 (-1);
626 vector unsigned char *p;
627
628 a1 = a2 = (intptr_t) pixmap->samples;
629 a2 = (a1 + 31) & ~31;
630 diff = a2 - a1;
631 sizea = size - diff;
632 p = (void *) a2;
633
634 while (a1 != a2) *(char *) a1++ = 0xff;
635 for (i = 0; i < (sizea & ~31); i += 32) {
636 __asm volatile ("dcbz %0, %1"::"b"(a2),"r"(i));
637 vec_st (v, i, p);
638 vec_st (v, i + 16, p);
639 }
640 while (i < sizea) *((char *) a1 + i++) = 0xff;
641 }
642 else fz_clear_pixmap_with_value (state.ctx, pixmap, 0xff);
643 }
644 #else
645 #define clearpixmap(p) fz_clear_pixmap_with_value (state.ctx, p, 0xff)
646 #endif
647
648 static fz_matrix trimctm (pdf_page *page, int pindex)
649 {
650 fz_matrix ctm;
651 struct pagedim *pdim = &state.pagedims[pindex];
652
653 if (!pdim->tctmready) {
654 if (state.trimmargins) {
655 fz_rect realbox;
656
657 ctm = fz_concat (fz_rotate (-pdim->rotate), fz_scale (1, -1));
658 realbox = fz_transform_rect (ctm, pdim->mediabox);
659 ctm = fz_concat (ctm, fz_translate (-realbox.x0, -realbox.y0));
660 ctm = fz_concat (fz_invert_matrix (page->ctm), ctm);
661 }
662 else {
663 ctm = fz_identity;
664 }
665 pdim->tctm = ctm;
666 pdim->tctmready = 1;
667 }
668 return pdim->tctm;
669 }
670
671 static fz_matrix pagectm (struct page *page)
672 {
673 if (page->type == DPDF) {
674 return fz_concat (trimctm (page->u.pdfpage, page->pdimno),
675 state.pagedims[page->pdimno].ctm);
676 }
677 else {
678 fz_matrix ctm;
679 struct pagedim *pdim = &state.pagedims[page->pdimno];
680
681 ctm = state.pagedims[page->pdimno].ctm;
682 ctm = fz_concat (fz_translate (-pdim->mediabox.x0,
683 -pdim->mediabox.y0), ctm);
684 return ctm;
685 }
686 }
687
688 static void *loadpage (int pageno, int pindex)
689 {
690 fz_device *dev;
691 struct page *page = NULL;
692
693 page = calloc (sizeof (struct page), 1);
694 if (!page) {
695 err (1, "calloc page %d", pageno);
696 }
697
698 page->dlist = fz_new_display_list (state.ctx);
699 dev = fz_new_list_device (state.ctx, page->dlist);
700 fz_try (state.ctx) {
701 switch (state.type) {
702 case DPDF:
703 page->u.pdfpage = pdf_load_page (state.u.pdf, pageno);
704 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, fz_identity, NULL);
705 page->freepage = freepdfpage;
706 break;
707
708 case DXPS:
709 page->u.xpspage = xps_load_page (state.u.xps, pageno);
710 xps_run_page (state.u.xps, page->u.xpspage, dev, fz_identity, NULL);
711 page->freepage = freexpspage;
712 break;
713
714 case DCBZ:
715 page->u.cbzpage = cbz_load_page (state.u.cbz, pageno);
716 cbz_run_page (state.u.cbz, page->u.cbzpage, dev, fz_identity, NULL);
717 page->freepage = freecbzpage;
718 break;
719 }
720 }
721 fz_catch (state.ctx) {
722 page->u.ptr = NULL;
723 page->freepage = freeemptyxxxpage;
724 }
725 fz_free_device (dev);
726
727 page->pdimno = pindex;
728 page->pageno = pageno;
729 page->sgen = state.gen;
730 page->tgen = state.gen;
731 page->type = state.type;
732
733 return page;
734 }
735
736 static struct tile *alloctile (int h)
737 {
738 int i;
739 int slicecount;
740 size_t tilesize;
741 struct tile *tile;
742
743 slicecount = (h + state.sliceheight - 1) / state.sliceheight;
744 tilesize = sizeof (*tile) + ((slicecount - 1) * sizeof (struct slice));
745 tile = calloc (tilesize, 1);
746 if (!tile) {
747 err (1, "can not allocate tile (%" FMT_s " bytes)", tilesize);
748 }
749 for (i = 0; i < slicecount; ++i) {
750 int sh = MIN (h, state.sliceheight);
751 tile->slices[i].h = sh;
752 tile->slices[i].texindex = -1;
753 h -= sh;
754 }
755 tile->slicecount = slicecount;
756 tile->sliceheight = state.sliceheight;
757 return tile;
758 }
759
760 #ifdef OBSCURED_OPT
761 struct obs {
762 int cured;
763 fz_bbox b;
764 };
765
766 static void obs_fill_image (fz_device *dev, fz_image *image, fz_matrix ctm,
767 float alpha)
768 {
769 struct obs *obs = dev->user;
770
771 if (!obs->cured && fabs (1.0 - alpha) < 1e6) {
772 fz_bbox b = fz_round_rect (fz_transform_rect (ctm, fz_unit_rect));
773 b = fz_intersect_bbox (b, obs->b);
774 obs->cured = b.x0 == obs->b.x0
775 && b.x1 == obs->b.x1
776 && b.y0 == obs->b.y0
777 && b.y1 == obs->b.y1;
778 }
779 }
780
781 static int obscured (struct page *page, fz_bbox bbox)
782 {
783 fz_device dev;
784 struct obs obs;
785
786 memset (&dev, 0, sizeof (dev));
787 memset (&obs, 0, sizeof (obs));
788 dev.hints = 0;
789 dev.flags = 0;
790 dev.user = &obs;
791 dev.ctx = state.ctx;
792 dev.fill_image = obs_fill_image;
793 obs.b = bbox;
794 fz_run_display_list (page->dlist, &dev, pagectm (page),
795 fz_rect_from_bbox (bbox), NULL);
796 return obs.cured;
797 }
798 #define OBSCURED obscured
799 #else
800 #define OBSCURED(a, b) 0
801 #endif
802
803 static struct tile *rendertile (struct page *page, int x, int y, int w, int h,
804 struct pbo *pbo)
805 {
806 fz_bbox bbox;
807 fz_device *dev;
808 struct tile *tile;
809 struct pagedim *pdim;
810
811 tile = alloctile (h);
812 pdim = &state.pagedims[page->pdimno];
813
814 bbox = pdim->bounds;
815 bbox.x0 += x;
816 bbox.y0 += y;
817 bbox.x1 = bbox.x0 + w;
818 bbox.y1 = bbox.y0 + h;
819
820 if (state.pig) {
821 if (state.pig->w == w
822 && state.pig->h == h
823 && state.pig->colorspace == state.colorspace) {
824 tile->pixmap = state.pig;
825 tile->pixmap->x = bbox.x0;
826 tile->pixmap->y = bbox.y0;
827 }
828 else {
829 fz_drop_pixmap (state.ctx, state.pig);
830 }
831 state.pig = NULL;
832 }
833 if (!tile->pixmap) {
834 if (pbo) {
835 tile->pixmap =
836 fz_new_pixmap_with_bbox_and_data (state.ctx, state.colorspace,
837 bbox, pbo->ptr);
838 tile->pbo = pbo;
839 }
840 else {
841 tile->pixmap =
842 fz_new_pixmap_with_bbox (state.ctx, state.colorspace, bbox);
843 }
844 }
845
846 tile->w = w;
847 tile->h = h;
848 if (!page->u.ptr || ((w < 128 && h < 128) || !OBSCURED (page, bbox))) {
849 clearpixmap (tile->pixmap);
850 }
851 dev = fz_new_draw_device (state.ctx, tile->pixmap);
852 fz_run_display_list (page->dlist, dev, pagectm (page),
853 fz_rect_from_bbox (bbox), NULL);
854 fz_free_device (dev);
855
856 return tile;
857 }
858
859 static void initpdims (void)
860 {
861 double start, end;
862 int pageno, trim, show;
863 FILE *trimf = NULL;
864 int trimw = 0;
865
866 start = now ();
867
868 if (state.trimmargins && state.trimcachepath) {
869 trimf = fopen (state.trimcachepath, "rb");
870 if (!trimf) {
871 trimf = fopen (state.trimcachepath, "wb");
872 trimw = 1;
873 }
874 }
875 for (pageno = 0; pageno < state.pagecount; ++pageno) {
876 int rotate = 0;
877 struct pagedim *p;
878 fz_rect mediabox;
879
880 switch (state.type) {
881 case DPDF: {
882 pdf_obj *pageobj = state.u.pdf->page_objs[pageno];
883
884 if (state.trimmargins) {
885 pdf_obj *obj;
886 pdf_page *page;
887
888 fz_try (state.ctx) {
889 page = pdf_load_page (state.u.pdf, pageno);
890 obj = pdf_dict_gets (pageobj, "llpp.TrimBox");
891 trim = state.trimanew || !obj;
892 if (trim) {
893 fz_rect rect;
894 fz_matrix ctm;
895 fz_device *dev;
896
897 dev = fz_new_bbox_device (state.ctx, &rect);
898 dev->hints |= FZ_IGNORE_SHADE;
899 ctm = fz_invert_matrix (page->ctm);
900 pdf_run_page (state.u.pdf, page, dev, fz_identity, NULL);
901 fz_free_device (dev);
902
903 rect.x0 += state.trimfuzz.x0;
904 rect.x1 += state.trimfuzz.x1;
905 rect.y0 += state.trimfuzz.y0;
906 rect.y1 += state.trimfuzz.y1;
907 rect = fz_transform_rect (ctm, rect);
908 rect = fz_intersect_rect (rect, page->mediabox);
909
910 if (fz_is_empty_rect (rect)) {
911 mediabox = page->mediabox;
912 }
913 else {
914 mediabox = rect;
915 }
916
917 obj = pdf_new_array (state.ctx, 4);
918 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x0));
919 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y0));
920 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.x1));
921 pdf_array_push (obj, pdf_new_real (state.ctx, mediabox.y1));
922 pdf_dict_puts (pageobj, "llpp.TrimBox", obj);
923 }
924 else {
925 mediabox.x0 = pdf_to_real (pdf_array_get (obj, 0));
926 mediabox.y0 = pdf_to_real (pdf_array_get (obj, 1));
927 mediabox.x1 = pdf_to_real (pdf_array_get (obj, 2));
928 mediabox.y1 = pdf_to_real (pdf_array_get (obj, 3));
929 }
930
931 rotate = page->rotate;
932 pdf_free_page (state.u.pdf, page);
933
934 show = trim ? pageno % 5 == 0 : pageno % 20 == 0;
935 if (show) {
936 printd ("progress %f Trimming %d",
937 (double) (pageno + 1) / state.pagecount,
938 pageno + 1);
939 }
940 }
941 fz_catch (state.ctx) {
942 fprintf (stderr, "failed to load page %d\n", pageno+1);
943 }
944 }
945 else {
946 fz_rect cropbox;
947
948 mediabox = pdf_to_rect (state.ctx,
949 pdf_dict_gets (pageobj, "MediaBox"));
950 if (fz_is_empty_rect (mediabox)) {
951 fprintf (stderr, "cannot find page size for page %d\n",
952 pageno+1);
953 mediabox.x0 = 0;
954 mediabox.y0 = 0;
955 mediabox.x1 = 612;
956 mediabox.y1 = 792;
957 }
958
959 cropbox = pdf_to_rect (state.ctx,
960 pdf_dict_gets (pageobj, "CropBox"));
961 if (!fz_is_empty_rect (cropbox)) {
962 mediabox = fz_intersect_rect (mediabox, cropbox);
963 }
964 rotate = pdf_to_int (pdf_dict_gets (pageobj, "Rotate"));
965 }
966 break;
967 }
968
969 case DXPS:
970 {
971 xps_page *page;
972
973 fz_try (state.ctx) {
974 page = xps_load_page (state.u.xps, pageno);
975 mediabox = xps_bound_page (state.u.xps, page);
976 rotate = 0;
977 if (state.trimmargins) {
978 fz_rect rect;
979 fz_device *dev;
980
981 dev = fz_new_bbox_device (state.ctx, &rect);
982 dev->hints |= FZ_IGNORE_SHADE;
983 xps_run_page (state.u.xps, page, dev, fz_identity, NULL);
984 fz_free_device (dev);
985
986 rect.x0 += state.trimfuzz.x0;
987 rect.x1 += state.trimfuzz.x1;
988 rect.y0 += state.trimfuzz.y0;
989 rect.y1 += state.trimfuzz.y1;
990 rect = fz_intersect_rect (rect, mediabox);
991
992 if (!fz_is_empty_rect (rect)) {
993 mediabox = rect;
994 }
995 }
996 xps_free_page (state.u.xps, page);
997 printd ("progress %f loading %d",
998 (double) (pageno + 1) / state.pagecount,
999 pageno + 1);
1000 }
1001 fz_catch (state.ctx) {
1002 }
1003 }
1004 break;
1005
1006 case DCBZ:
1007 {
1008 rotate = 0;
1009 if (state.trimmargins && trimw) {
1010 cbz_page *page;
1011
1012 fz_try (state.ctx) {
1013 page = cbz_load_page (state.u.cbz, pageno);
1014 mediabox = cbz_bound_page (state.u.cbz, page);
1015 cbz_free_page (state.u.cbz, page);
1016 printd ("progress %f Trimming %d",
1017 (double) (pageno + 1) / state.pagecount,
1018 pageno + 1);
1019 }
1020 fz_catch (state.ctx) {
1021 fprintf (stderr, "failed to load page %d\n", pageno+1);
1022 mediabox.x0 = 0;
1023 mediabox.y0 = 0;
1024 mediabox.x1 = 900;
1025 mediabox.y1 = 900;
1026 }
1027 if (trimf) {
1028 int n = fwrite (&mediabox, sizeof (mediabox), 1, trimf);
1029 if (n - 1) {
1030 err (1, "fwrite trim mediabox");
1031 }
1032 }
1033 }
1034 else {
1035 if (trimf) {
1036 int n = fread (&mediabox, sizeof (mediabox), 1, trimf);
1037 if (n - 1) {
1038 err (1, "fread trim mediabox");
1039 }
1040 }
1041 else {
1042 mediabox.x0 = mediabox.y0 = 0;
1043 mediabox.x1 = 900;
1044 mediabox.y1 = 900;
1045 }
1046 }
1047 }
1048 break;
1049
1050 default:
1051 ARSERT (0 && state.type);
1052 }
1053
1054 if (state.pagedimcount == 0
1055 || (p = &state.pagedims[state.pagedimcount-1], p->rotate != rotate)
1056 || memcmp (&p->mediabox, &mediabox, sizeof (mediabox))) {
1057 size_t size;
1058
1059 size = (state.pagedimcount + 1) * sizeof (*state.pagedims);
1060 state.pagedims = realloc (state.pagedims, size);
1061 if (!state.pagedims) {
1062 err (1, "realloc pagedims to %" FMT_s " (%d elems)",
1063 size, state.pagedimcount + 1);
1064 }
1065
1066 p = &state.pagedims[state.pagedimcount++];
1067 p->rotate = rotate;
1068 p->mediabox = mediabox;
1069 p->pageno = pageno;
1070 }
1071 }
1072 end = now ();
1073 if (state.trimmargins) {
1074 printd ("progress 1 Trimmed %d pages in %f seconds",
1075 state.pagecount, end - start);
1076 }
1077 else {
1078 printd ("vmsg Processed %d pages in %f seconds",
1079 state.pagecount, end - start);
1080 }
1081 state.trimanew = 0;
1082 if (trimf) {
1083 if (fclose (trimf)) {
1084 err (1, "fclose");
1085 }
1086 }
1087 }
1088
1089 static void layout (void)
1090 {
1091 int pindex;
1092 fz_rect box;
1093 fz_matrix ctm;
1094 double zoom, w, maxw = 0;
1095 struct pagedim *p = state.pagedims;
1096
1097 if (state.proportional) {
1098 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1099 box = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
1100 p->mediabox);
1101 w = box.x1 - box.x0;
1102 maxw = MAX (w, maxw);
1103 }
1104 }
1105
1106 p = state.pagedims;
1107 for (pindex = 0; pindex < state.pagedimcount; ++pindex, ++p) {
1108 fz_bbox bbox;
1109
1110 ctm = fz_rotate (state.rotate);
1111 box = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
1112 p->mediabox);
1113 w = box.x1 - box.x0;
1114
1115 if (state.proportional) {
1116 double scale = w / maxw;
1117 zoom = (state.w / w) * scale;
1118 }
1119 else {
1120 zoom = state.w / w;
1121 }
1122
1123 p->zoomctm = fz_scale (zoom, zoom);
1124 ctm = fz_concat (p->zoomctm, ctm);
1125
1126 p->pagebox = fz_transform_rect (fz_rotate (p->rotate), p->mediabox);
1127 p->pagebox.x1 -= p->pagebox.x0;
1128 p->pagebox.y1 -= p->pagebox.y0;
1129 p->pagebox.x0 = 0;
1130 p->pagebox.y0 = 0;
1131 bbox = fz_round_rect (fz_transform_rect (ctm, p->pagebox));
1132
1133 p->bounds = bbox;
1134 p->left = state.proportional ? ((maxw - w) * zoom) / 2.0 : 0;
1135 p->ctm = ctm;
1136
1137 ctm = fz_identity;
1138 ctm = fz_concat (ctm, fz_translate (0, -p->mediabox.y1));
1139 ctm = fz_concat (ctm, fz_scale (zoom, -zoom));
1140 ctm = fz_concat (ctm, fz_rotate (p->rotate + state.rotate));
1141 p->lctm = ctm;
1142
1143 p->tctmready = 0;
1144 }
1145
1146 while (p-- != state.pagedims) {
1147 int x0 = MIN (p->bounds.x0, p->bounds.x1);
1148 int y0 = MIN (p->bounds.y0, p->bounds.y1);
1149 int x1 = MAX (p->bounds.x0, p->bounds.x1);
1150 int y1 = MAX (p->bounds.y0, p->bounds.y1);
1151 int w = x1 - x0;
1152 int h = y1 - y0;
1153
1154 printd ("pdim %d %d %d %d", p->pageno, w, h, p->left);
1155 }
1156 }
1157
1158 static struct anchor { int n; int y; int h; } desttoanchor (fz_link_dest *dest)
1159 {
1160 int i;
1161 struct anchor a;
1162 struct pagedim *pdim = state.pagedims;
1163
1164 a.n = -1;
1165 a.y = 0;
1166 for (i = 0; i < state.pagedimcount; ++i) {
1167 if (state.pagedims[i].pageno > dest->ld.gotor.page)
1168 break;
1169 pdim = &state.pagedims[i];
1170 }
1171 if (dest->ld.gotor.flags & fz_link_flag_t_valid) {
1172 fz_point p;
1173 p.x = 0;
1174 p.y = dest->ld.gotor.lt.y;
1175 p = fz_transform_point (pdim->lctm, p);
1176 a.y = p.y;
1177 }
1178 if (dest->ld.gotor.page >= 0 && dest->ld.gotor.page < 1<<30) {
1179 double y0, y1;
1180
1181 y0 = MIN (pdim->bounds.y0, pdim->bounds.y1);
1182 y1 = MAX (pdim->bounds.y0, pdim->bounds.y1);
1183 a.h = y1 - y0;
1184 a.n = dest->ld.gotor.page;
1185 }
1186 return a;
1187 }
1188
1189 static void recurse_outline (fz_outline *outline, int level)
1190 {
1191 while (outline) {
1192 struct anchor a = desttoanchor (&outline->dest);
1193
1194 if (a.n >= 0) {
1195 printd ("o %d %d %d %d %s",
1196 level, a.n, a.y, a.h, outline->title);
1197 }
1198 if (outline->down) {
1199 recurse_outline (outline->down, level + 1);
1200 }
1201 outline = outline->next;
1202 }
1203 }
1204
1205 static void process_outline (void)
1206 {
1207 fz_outline *outline;
1208
1209 if (!state.needoutline) return;
1210
1211 state.needoutline = 0;
1212 switch (state.type) {
1213 case DPDF:
1214 outline = pdf_load_outline (state.u.pdf);
1215 break;
1216 case DXPS:
1217 outline = xps_load_outline (state.u.xps);
1218 break;
1219 default:
1220 outline = NULL;
1221 break;
1222 }
1223 if (outline) {
1224 recurse_outline (outline, 0);
1225 fz_free_outline (state.ctx, outline);
1226 }
1227 }
1228
1229 static char *strofspan (fz_text_span *span)
1230 {
1231 char *p;
1232 char utf8[10];
1233 fz_text_char *ch;
1234 size_t size = 0, cap = 80;
1235
1236 p = malloc (cap + 1);
1237 if (!p) return NULL;
1238
1239 for (ch = span->text; ch < span->text + span->len; ++ch) {
1240 int n = fz_runetochar (utf8, ch->c);
1241 if (size + n > cap) {
1242 cap *= 2;
1243 p = realloc (p, cap + 1);
1244 if (!p) return NULL;
1245 }
1246
1247 memcpy (p + size, utf8, n);
1248 size += n;
1249 }
1250 p[size] = 0;
1251 return p;
1252 }
1253
1254 static int matchspan (regex_t *re, fz_text_span *span, fz_matrix ctm,
1255 int stop, int pageno, double start)
1256 {
1257 int ret;
1258 char *p;
1259 regmatch_t rm;
1260 int a, b, c;
1261 fz_rect *sb, *eb;
1262 fz_point p1, p2, p3, p4;
1263
1264 p = strofspan (span);
1265 if (!p) return -1;
1266
1267 ret = regexec (re, p, 1, &rm, 0);
1268 if (ret) {
1269 free (p);
1270 if (ret != REG_NOMATCH) {
1271 size_t size;
1272 char errbuf[80];
1273 size = regerror (ret, re, errbuf, sizeof (errbuf));
1274 printd ("msg regexec error `%.*s'",
1275 (int) size, errbuf);
1276 return -1;
1277 }
1278 return 0;
1279 }
1280 else {
1281 int l = span->len;
1282 for (a = 0, c = 0; c < rm.rm_so && a < l; a++) {
1283 c += fz_runelen (span->text[a].c);
1284 }
1285 for (b = a; c < rm.rm_eo - 1 && b < l; b++) {
1286 c += fz_runelen (span->text[b].c);
1287 }
1288
1289 if (fz_runelen (span->text[b].c) > 1) {
1290 b = MAX (0, b-1);
1291 }
1292 sb = &span->text[MIN (a, l-1)].bbox;
1293 eb = &span->text[MIN (b, l-1)].bbox;
1294
1295 p1.x = sb->x0;
1296 p1.y = sb->y0;
1297 p2.x = eb->x1;
1298 p2.y = sb->y0;
1299 p3.x = eb->x1;
1300 p3.y = eb->y1;
1301 p4.x = sb->x0;
1302 p4.y = eb->y1;
1303
1304 if (!stop) {
1305 printd ("firstmatch %d %d %f %f %f %f %f %f %f %f",
1306 pageno, 1,
1307 p1.x, p1.y,
1308 p2.x, p2.y,
1309 p3.x, p3.y,
1310 p4.x, p4.y);
1311
1312 printd ("progress 1 found at %d `%.*s' in %f sec",
1313 pageno + 1, (int) (rm.rm_eo - rm.rm_so), &p[rm.rm_so],
1314 now () - start);
1315 }
1316 else {
1317 printd ("match %d %d %f %f %f %f %f %f %f %f",
1318 pageno, 2,
1319 p1.x, p1.y,
1320 p2.x, p2.y,
1321 p3.x, p3.y,
1322 p4.x, p4.y);
1323 }
1324 free (p);
1325 return 1;
1326 }
1327 }
1328
1329 static int compareblocks (const void *l, const void *r)
1330 {
1331 fz_text_block const *ls = l;
1332 fz_text_block const* rs = r;
1333 return ls->bbox.y0 - rs->bbox.y0;
1334 }
1335
1336 /* wishful thinking function */
1337 static void search (regex_t *re, int pageno, int y, int forward)
1338 {
1339 int i, j;
1340 fz_matrix ctm;
1341 fz_device *tdev;
1342 union { void *ptr; pdf_page *pdfpage; xps_page *xpspage; } u;
1343 fz_text_page *text;
1344 fz_text_sheet *sheet;
1345 struct pagedim *pdim, *pdimprev;
1346 int stop = 0, niters = 0;
1347 double start, end;
1348
1349 if (!(state.type == DPDF || state.type == DXPS))
1350 return;
1351
1352 start = now ();
1353 while (pageno >= 0 && pageno < state.pagecount && !stop) {
1354 if (niters++ == 5) {
1355 niters = 0;
1356 if (hasdata ()) {
1357 printd ("progress 1 attention requested aborting search at %d",
1358 pageno);
1359 stop = 1;
1360 }
1361 else {
1362 printd ("progress %f searching in page %d",
1363 (double) (pageno + 1) / state.pagecount,
1364 pageno);
1365 }
1366 }
1367 pdimprev = NULL;
1368 for (i = 0; i < state.pagedimcount; ++i) {
1369 pdim = &state.pagedims[i];
1370 if (pdim->pageno == pageno) {
1371 goto found;
1372 }
1373 if (pdim->pageno > pageno) {
1374 pdim = pdimprev;
1375 goto found;
1376 }
1377 pdimprev = pdim;
1378 }
1379 pdim = pdimprev;
1380 found:
1381
1382 sheet = fz_new_text_sheet (state.ctx);
1383 text = fz_new_text_page (state.ctx, fz_infinite_rect);
1384 tdev = fz_new_text_device (state.ctx, sheet, text);
1385
1386 switch (state.type) {
1387 case DPDF:
1388 u.ptr = NULL;
1389 fz_try (state.ctx) {
1390 u.pdfpage = pdf_load_page (state.u.pdf, pageno);
1391 trimctm (u.pdfpage, pdim - state.pagedims);
1392 ctm = fz_concat (pdim->tctm, pdim->zoomctm);
1393 pdf_run_page (state.u.pdf, u.pdfpage, tdev, ctm, NULL);
1394 }
1395 fz_catch (state.ctx) {
1396 fz_free_device (tdev);
1397 u.ptr = NULL;
1398 goto nextiter;
1399 }
1400 break;
1401
1402 case DXPS:
1403 u.xpspage = xps_load_page (state.u.xps, pageno);
1404 ctm = pdim->ctm;
1405 xps_run_page (state.u.xps, u.xpspage, tdev, ctm, NULL);
1406 break;
1407
1408 default:
1409 ARSERT (0 && state.type);
1410 }
1411
1412 qsort (text->blocks, text->len, sizeof (*text->blocks), compareblocks);
1413 fz_free_device (tdev);
1414
1415 for (j = 0; j < text->len; ++j) {
1416 int k;
1417 fz_text_block *block;
1418
1419 block = &text->blocks[forward ? j : text->len - 1 - j];
1420
1421 for (k = 0; k < block->len; ++k) {
1422 fz_text_line *line;
1423 fz_text_span *span;
1424
1425 if (forward) {
1426 line = &block->lines[k];
1427 if (line->bbox.y0 < y + 1) continue;
1428 }
1429 else {
1430 line = &block->lines[block->len - 1 - k];
1431 if (line->bbox.y0 > y - 1) continue;
1432 }
1433
1434 for (span = line->spans;
1435 span < line->spans + line->len;
1436 ++span) {
1437
1438 switch (matchspan (re, span, ctm, stop, pageno, start)) {
1439 case 0: break;
1440 case 1: stop = 1; break;
1441 case -1: stop = 1; goto endloop;
1442 }
1443 }
1444 }
1445 }
1446 nextiter:
1447 if (forward) {
1448 pageno += 1;
1449 y = 0;
1450 }
1451 else {
1452 pageno -= 1;
1453 y = INT_MAX;
1454 }
1455 endloop:
1456 fz_free_text_page (state.ctx, text);
1457 fz_free_text_sheet (state.ctx, sheet);
1458 if (u.ptr) {
1459 state.freepage (u.ptr);
1460 }
1461 }
1462 end = now ();
1463 if (!stop) {
1464 printd ("progress 1 no matches %f sec", end - start);
1465 }
1466 printd ("clearrects");
1467 }
1468
1469 static void set_tex_params (int colorspace)
1470 {
1471 union {
1472 unsigned char b;
1473 unsigned int s;
1474 } endianness = {1};
1475
1476 switch (colorspace) {
1477 case 0:
1478 state.texiform = GL_RGBA8;
1479 state.texform = GL_RGBA;
1480 state.texty = GL_UNSIGNED_BYTE;
1481 state.colorspace = fz_device_rgb;
1482 break;
1483 case 1:
1484 state.texiform = GL_RGBA8;
1485 state.texform = GL_BGRA;
1486 state.texty = endianness.s > 1
1487 ? GL_UNSIGNED_INT_8_8_8_8
1488 : GL_UNSIGNED_INT_8_8_8_8_REV;
1489 state.colorspace = fz_device_bgr;
1490 break;
1491 case 2:
1492 state.texiform = GL_LUMINANCE_ALPHA;
1493 state.texform = GL_LUMINANCE_ALPHA;
1494 state.texty = GL_UNSIGNED_BYTE;
1495 state.colorspace = fz_device_gray;
1496 break;
1497 default:
1498 errx (1, "invalid colorspce %d", colorspace);
1499 }
1500 }
1501
1502 static void realloctexts (int texcount)
1503 {
1504 size_t size;
1505
1506 if (texcount == state.texcount) return;
1507
1508 if (texcount < state.texcount) {
1509 glDeleteTextures (state.texcount - texcount,
1510 state.texids + texcount);
1511 }
1512
1513 size = texcount * sizeof (*state.texids);
1514 state.texids = realloc (state.texids, size);
1515 if (!state.texids) {
1516 err (1, "realloc texids %" FMT_s, size);
1517 }
1518
1519 size = texcount * sizeof (*state.texowners);
1520 state.texowners = realloc (state.texowners, size);
1521 if (!state.texowners) {
1522 err (1, "realloc texowners %" FMT_s, size);
1523 }
1524 if (texcount > state.texcount) {
1525 int i;
1526
1527 glGenTextures (texcount - state.texcount,
1528 state.texids + state.texcount);
1529 for (i = state.texcount; i < texcount; ++i) {
1530 state.texowners[i].w = -1;
1531 state.texowners[i].slice = NULL;
1532 }
1533 }
1534 state.texcount = texcount;
1535 state.texindex = 0;
1536 }
1537
1538 static char *mbtoutf8 (char *s)
1539 {
1540 char *p, *r;
1541 wchar_t *tmp;
1542 size_t i, ret, len;
1543
1544 len = mbstowcs (NULL, s, strlen (s));
1545 if (len == 0) {
1546 return s;
1547 }
1548 else {
1549 if (len == (size_t) -1) {
1550 return s;
1551 }
1552 }
1553
1554 tmp = malloc (len * sizeof (wchar_t));
1555 if (!tmp) {
1556 return s;
1557 }
1558
1559 ret = mbstowcs (tmp, s, len);
1560 if (ret == (size_t) -1) {
1561 free (tmp);
1562 return s;
1563 }
1564
1565 len = 0;
1566 for (i = 0; i < ret; ++i) {
1567 len += fz_runelen (tmp[i]);
1568 }
1569
1570 p = r = malloc (len + 1);
1571 if (!r) {
1572 free (tmp);
1573 return s;
1574 }
1575
1576 for (i = 0; i < ret; ++i) {
1577 p += fz_runetochar (p, tmp[i]);
1578 }
1579 *p = 0;
1580 free (tmp);
1581 return r;
1582 }
1583
1584 CAMLprim value ml_mbtoutf8 (value s_v)
1585 {
1586 CAMLparam1 (s_v);
1587 CAMLlocal1 (ret_v);
1588 char *s, *r;
1589
1590 s = String_val (s_v);
1591 r = mbtoutf8 (s);
1592 if (r == s) {
1593 ret_v = s_v;
1594 }
1595 else {
1596 ret_v = caml_copy_string (r);
1597 free (r);
1598 }
1599 CAMLreturn (ret_v);
1600 }
1601
1602 static void * mainloop (void *unused)
1603 {
1604 char *p = NULL;
1605 int len, ret, oldlen = 0;
1606
1607 for (;;) {
1608 len = readlen ();
1609 if (len == 0) {
1610 errx (1, "readlen returned 0");
1611 }
1612
1613 if (oldlen < len + 1) {
1614 p = realloc (p, len + 1);
1615 if (!p) {
1616 err (1, "realloc %d failed", len + 1);
1617 }
1618 oldlen = len + 1;
1619 }
1620 readdata (p, len);
1621 p[len] = 0;
1622
1623 if (!strncmp ("open", p, 4)) {
1624 size_t filenamelen;
1625 int wthack, off;
1626 char *password;
1627 char *filename;
1628 char *utf8filename;
1629
1630 ret = sscanf (p + 5, " %d %n", &wthack, &off);
1631 if (ret != 1) {
1632 errx (1, "malformed open `%.*s' ret=%d", len, p, ret);
1633 }
1634
1635 filename = p + 5 + off;
1636 filenamelen = strlen (filename);
1637 password = filename + filenamelen + 1;
1638
1639 lock ("open");
1640 openxref (filename, password);
1641 pdfinfo ();
1642 initpdims ();
1643 unlock ("open");
1644
1645 if (!wthack) {
1646 utf8filename = mbtoutf8 (filename);
1647 printd ("msg Opened %s (press h/F1 to get help)", utf8filename);
1648 if (utf8filename != filename) {
1649 free (utf8filename);
1650 }
1651 }
1652 state.needoutline = 1;
1653 }
1654 else if (!strncmp ("cs", p, 2)) {
1655 int i, colorspace;
1656
1657 ret = sscanf (p + 2, " %d", &colorspace);
1658 if (ret != 1) {
1659 errx (1, "malformed cs `%.*s' ret=%d", len, p, ret);
1660 }
1661 lock ("cs");
1662 set_tex_params (colorspace);
1663 for (i = 0; i < state.texcount; ++i) {
1664 state.texowners[i].w = -1;
1665 state.texowners[i].slice = NULL;
1666 }
1667 unlock ("cs");
1668 }
1669 else if (!strncmp ("freepage", p, 8)) {
1670 void *ptr;
1671
1672 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1673 if (ret != 1) {
1674 errx (1, "malformed freepage `%.*s' ret=%d", len, p, ret);
1675 }
1676 freepage (ptr);
1677 }
1678 else if (!strncmp ("freetile", p, 8)) {
1679 void *ptr;
1680
1681 ret = sscanf (p + 8, " %" FMT_ptr, FMT_ptr_cast (&ptr));
1682 if (ret != 1) {
1683 errx (1, "malformed freetile `%.*s' ret=%d", len, p, ret);
1684 }
1685 freetile (ptr);
1686 }
1687 else if (!strncmp ("search", p, 6)) {
1688 int icase, pageno, y, ret, len2, forward;
1689 char *pattern;
1690 regex_t re;
1691
1692 ret = sscanf (p + 6, " %d %d %d %d,%n",
1693 &icase, &pageno, &y, &forward, &len2);
1694 if (ret != 4) {
1695 errx (1, "malformed search `%s' ret=%d", p, ret);
1696 }
1697
1698 pattern = p + 6 + len2;
1699 ret = regcomp (&re, pattern,
1700 REG_EXTENDED | (icase ? REG_ICASE : 0));
1701 if (ret) {
1702 char errbuf[80];
1703 size_t size;
1704
1705 size = regerror (ret, &re, errbuf, sizeof (errbuf));
1706 printd ("msg regcomp failed `%.*s'", (int) size, errbuf);
1707 }
1708 else {
1709 search (&re, pageno, y, forward);
1710 regfree (&re);
1711 }
1712 }
1713 else if (!strncmp ("geometry", p, 8)) {
1714 int w, h;
1715
1716 printd ("clear");
1717 ret = sscanf (p + 8, " %d %d", &w, &h);
1718 if (ret != 2) {
1719 errx (1, "malformed geometry `%.*s' ret=%d", len, p, ret);
1720 }
1721
1722 lock ("geometry");
1723 state.h = h;
1724 if (w != state.w) {
1725 int i;
1726 state.w = w;
1727 for (i = 0; i < state.texcount; ++i) {
1728 state.texowners[i].slice = NULL;
1729 }
1730 }
1731 layout ();
1732 process_outline ();
1733
1734 state.gen++;
1735 unlock ("geometry");
1736 printd ("continue %d", state.pagecount);
1737 }
1738 else if (!strncmp ("reqlayout", p, 9)) {
1739 char *nameddest;
1740 int rotate, proportional, off;
1741
1742 printd ("clear");
1743 ret = sscanf (p + 9, " %d %d %n", &rotate, &proportional, &off);
1744 if (ret != 2) {
1745 errx (1, "bad reqlayout line `%.*s' ret=%d", len, p, ret);
1746 }
1747 lock ("reqlayout");
1748 if (state.rotate != rotate || state.proportional != proportional) {
1749 state.gen += 1;
1750 }
1751 state.rotate = rotate;
1752 state.proportional = proportional;
1753 layout ();
1754 process_outline ();
1755
1756 nameddest = p + 9 + off;
1757 if (state.type == DPDF && nameddest && *nameddest) {
1758 struct anchor a;
1759 fz_link_dest dest;
1760 pdf_obj *needle, *obj;
1761
1762 needle = pdf_new_string (state.ctx, nameddest,
1763 strlen (nameddest));
1764 obj = pdf_lookup_dest (state.u.pdf, needle);
1765 if (obj) {
1766 dest = pdf_parse_link_dest (state.u.pdf, obj);
1767
1768 a = desttoanchor (&dest);
1769 if (a.n >= 0) {
1770 printd ("a %d %d %d", a.n, a.y, a.h);
1771 }
1772 else {
1773 printd ("emsg failed to parse destination `%s'\n",
1774 nameddest);
1775 }
1776 }
1777 else {
1778 printd ("emsg destination `%s' not found\n",
1779 nameddest);
1780 }
1781 pdf_drop_obj (needle);
1782 }
1783
1784 state.gen++;
1785 unlock ("reqlayout");
1786 printd ("continue %d", state.pagecount);
1787 }
1788 else if (!strncmp ("page", p, 4)) {
1789 double a, b;
1790 struct page *page;
1791 int pageno, pindex, ret;
1792
1793 ret = sscanf (p + 4, " %d %d", &pageno, &pindex);
1794 if (ret != 2) {
1795 errx (1, "bad render line `%.*s' ret=%d", len, p, ret);
1796 }
1797
1798 lock ("page");
1799 a = now ();
1800 page = loadpage (pageno, pindex);
1801 b = now ();
1802 unlock ("page");
1803
1804 printd ("page %" FMT_ptr " %f", FMT_ptr_cast2 (page), b - a);
1805 }
1806 else if (!strncmp ("tile", p, 4)) {
1807 int x, y, w, h, ret;
1808 struct page *page;
1809 struct tile *tile;
1810 double a, b;
1811 void *data;
1812
1813 ret = sscanf (p + 4, " %" FMT_ptr " %d %d %d %d %" FMT_ptr,
1814 FMT_ptr_cast (&page), &x, &y, &w, &h, &data);
1815 if (ret != 6) {
1816 errx (1, "bad tile line `%.*s' ret=%d", len, p, ret);
1817 }
1818
1819 lock ("tile");
1820 a = now ();
1821 tile = rendertile (page, x, y, w, h, data);
1822 b = now ();
1823 unlock ("tile");
1824
1825 printd ("tile %d %d %" FMT_ptr " %u %f",
1826 x, y,
1827 FMT_ptr_cast2 (tile),
1828 tile->w * tile->h * tile->pixmap->n,
1829 b - a);
1830 }
1831 else if (!strncmp ("settrim", p, 7)) {
1832 int trimmargins;
1833 fz_bbox fuzz;
1834
1835 ret = sscanf (p + 7, " %d %d %d %d %d", &trimmargins,
1836 &fuzz.x0, &fuzz.y0, &fuzz.x1, &fuzz.y1);
1837 if (ret != 5) {
1838 errx (1, "malformed settrim `%.*s' ret=%d", len, p, ret);
1839 }
1840 printd ("clear");
1841 lock ("settrim");
1842 state.trimmargins = trimmargins;
1843 state.needoutline = 1;
1844 if (memcmp (&fuzz, &state.trimfuzz, sizeof (fuzz))) {
1845 state.trimanew = 1;
1846 state.trimfuzz = fuzz;
1847 }
1848 state.pagedimcount = 0;
1849 free (state.pagedims);
1850 state.pagedims = NULL;
1851 initpdims ();
1852 layout ();
1853 process_outline ();
1854 unlock ("settrim");
1855 printd ("continue %d", state.pagecount);
1856 }
1857 else if (!strncmp ("sliceh", p, 6)) {
1858 int h;
1859
1860 ret = sscanf (p + 6, " %d", &h);
1861 if (ret != 1) {
1862 errx (1, "malformed sliceh `%.*s' ret=%d", len, p, ret);
1863 }
1864 if (h != state.sliceheight) {
1865 int i;
1866
1867 state.sliceheight = h;
1868 for (i = 0; i < state.texcount; ++i) {
1869 state.texowners[i].w = -1;
1870 state.texowners[i].h = -1;
1871 state.texowners[i].slice = NULL;
1872 }
1873 }
1874 }
1875 else if (!strncmp ("interrupt", p, 9)) {
1876 printd ("vmsg interrupted");
1877 }
1878 else {
1879 errx (1, "unknown command %.*s", len, p);
1880 }
1881 }
1882 return 0;
1883 }
1884
1885 CAMLprim value ml_realloctexts (value texcount_v)
1886 {
1887 CAMLparam1 (texcount_v);
1888 int ok;
1889
1890 if (trylock ("ml_realloctexts")) {
1891 ok = 0;
1892 goto done;
1893 }
1894 realloctexts (Int_val (texcount_v));
1895 ok = 1;
1896 unlock ("ml_realloctexts");
1897
1898 done:
1899 CAMLreturn (Val_bool (ok));
1900 }
1901
1902 static void showsel (struct page *page, int ox, int oy)
1903 {
1904 int seen = 0;
1905 fz_bbox bbox;
1906 fz_rect rect;
1907 fz_text_line *line;
1908 fz_text_span *span;
1909 fz_text_block *block;
1910 struct mark first, last;
1911
1912 first = page->fmark;
1913 last = page->lmark;
1914
1915 if (!first.span || !last.span) return;
1916
1917 glEnable (GL_BLEND);
1918 glBlendFunc (GL_SRC_ALPHA, GL_SRC_ALPHA);
1919 glColor4f (0.5f, 0.5f, 0.0f, 0.6f);
1920
1921 ox += state.pagedims[page->pdimno].bounds.x0;
1922 oy += state.pagedims[page->pdimno].bounds.y0;
1923 for (block = page->text->blocks;
1924 block < page->text->blocks + page->text->len;
1925 ++block) {
1926 for (line = block->lines;
1927 line < block->lines + block->len;
1928 ++line) {
1929 for (span = line->spans;
1930 span < line->spans + line->len;
1931 ++span) {
1932 int i, j, k;
1933
1934 bbox.x0 = bbox.y0 = bbox.x1 = bbox.y1 = 0;
1935
1936 j = 0;
1937 k = span->len - 1;
1938
1939 if (span == page->fmark.span && span == page->lmark.span) {
1940 seen = 1;
1941 j = MIN (first.i, last.i);
1942 k = MAX (first.i, last.i);
1943 }
1944 else if (span == first.span) {
1945 seen = 1;
1946 j = first.i;
1947 }
1948 else if (span == last.span) {
1949 seen = 1;
1950 k = last.i;
1951 }
1952
1953 if (seen) {
1954 for (i = j; i <= k; ++i) {
1955 rect = fz_union_rect (rect, span->text[i].bbox);
1956 }
1957 bbox = fz_round_rect (rect);
1958 lprintf ("%d %d %d %d oy=%d ox=%d\n",
1959 bbox.x0,
1960 bbox.y0,
1961 bbox.x1,
1962 bbox.y1,
1963 oy, ox);
1964
1965 glRecti (bbox.x0 + ox, bbox.y0 + oy,
1966 bbox.x1 + ox, bbox.y1 + oy);
1967 if (span == last.span) {
1968 goto done;
1969 }
1970 }
1971 }
1972 }
1973 }
1974 done:
1975 glDisable (GL_BLEND);
1976 }
1977
1978 #include "glfont.c"
1979
1980 static void highlightlinks (struct page *page, int xoff, int yoff)
1981 {
1982 fz_matrix ctm;
1983 fz_link *link, *links;
1984
1985 switch (page->type) {
1986 case DPDF:
1987 links = page->u.pdfpage->links;
1988 break;
1989
1990 case DXPS:
1991 links = page->u.xpspage->links;
1992 break;
1993
1994 default:
1995 return;
1996 }
1997
1998 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
1999 glEnable (GL_LINE_STIPPLE);
2000 glLineStipple (0.5, 0xcccc);
2001
2002 xoff -= state.pagedims[page->pdimno].bounds.x0;
2003 yoff -= state.pagedims[page->pdimno].bounds.y0;
2004 ctm = fz_concat (pagectm (page), fz_translate (xoff, yoff));
2005
2006 glBegin (GL_QUADS);
2007 for (link = links; link; link = link->next) {
2008 fz_point p1, p2, p3, p4;
2009
2010 p1.x = link->rect.x0;
2011 p1.y = link->rect.y0;
2012
2013 p2.x = link->rect.x1;
2014 p2.y = link->rect.y0;
2015
2016 p3.x = link->rect.x1;
2017 p3.y = link->rect.y1;
2018
2019 p4.x = link->rect.x0;
2020 p4.y = link->rect.y1;
2021
2022 p1 = fz_transform_point (ctm, p1);
2023 p2 = fz_transform_point (ctm, p2);
2024 p3 = fz_transform_point (ctm, p3);
2025 p4 = fz_transform_point (ctm, p4);
2026
2027 switch (link->dest.kind) {
2028 case FZ_LINK_GOTO: glColor3ub (255, 0, 0); break;
2029 case FZ_LINK_URI: glColor3ub (0, 0, 255); break;
2030 default: glColor3ub (0, 0, 0); break;
2031 }
2032
2033 glVertex2f (p1.x, p1.y);
2034 glVertex2f (p2.x, p2.y);
2035 glVertex2f (p3.x, p3.y);
2036 glVertex2f (p4.x, p4.y);
2037 }
2038 glEnd ();
2039
2040 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2041 glDisable (GL_LINE_STIPPLE);
2042 }
2043
2044 static int compareslinks (const void *l, const void *r)
2045 {
2046 struct slink const *ls = l;
2047 struct slink const *rs = r;
2048 if (ls->bbox.y0 == rs->bbox.y0) {
2049 return rs->bbox.x0 - rs->bbox.x0;
2050 }
2051 return ls->bbox.y0 - rs->bbox.y0;
2052 }
2053
2054 static void droptext (struct page *page)
2055 {
2056 if (page->text) {
2057 fz_free_text_page (state.ctx, page->text);
2058 page->fmark.i = -1;
2059 page->lmark.i = -1;
2060 page->fmark.span = NULL;
2061 page->lmark.span = NULL;
2062 page->text = NULL;
2063 }
2064 if (page->sheet) {
2065 fz_free_text_sheet (state.ctx, page->sheet);
2066 }
2067 }
2068
2069 static void dropslinks (struct page *page)
2070 {
2071 if (page->slinks) {
2072 free (page->slinks);
2073 page->slinks = NULL;
2074 page->slinkcount = 0;
2075 }
2076 }
2077
2078 static void ensureslinks (struct page *page)
2079 {
2080 fz_matrix ctm;
2081 int i, count = 0;
2082 size_t slinksize = sizeof (*page->slinks);
2083 fz_link *link, *links;
2084
2085 if (state.gen != page->sgen) {
2086 dropslinks (page);
2087 page->sgen = state.gen;
2088 }
2089 if (page->slinks) return;
2090
2091 switch (page->type) {
2092 case DPDF:
2093 links = page->u.pdfpage->links;
2094 ctm = fz_concat (trimctm (page->u.pdfpage, page->pdimno),
2095 state.pagedims[page->pdimno].ctm);
2096 break;
2097
2098 case DXPS:
2099 links = page->u.xpspage->links;
2100 ctm = state.pagedims[page->pdimno].ctm;
2101 break;
2102
2103 default:
2104 return;
2105 }
2106
2107 for (link = links; link; link = link->next) {
2108 count++;
2109 }
2110 if (count > 0) {
2111 page->slinkcount = count;
2112 page->slinks = calloc (count, slinksize);
2113 if (!page->slinks) {
2114 err (1, "realloc slinks %d", count);
2115 }
2116
2117 for (i = 0, link = links; link; ++i, link = link->next) {
2118 page->slinks[i].link = link;
2119 page->slinks[i].bbox =
2120 fz_round_rect (fz_transform_rect (ctm, link->rect));
2121 }
2122 qsort (page->slinks, count, slinksize, compareslinks);
2123 }
2124 }
2125
2126 /* slightly tweaked fmt_ulong by D.J. Bernstein */
2127 static void fmt_linkn (char *s, unsigned int u)
2128 {
2129 unsigned int len; unsigned int q;
2130 int zma = 'z' - 'a' + 1;
2131 len = 1; q = u;
2132 while (q > zma - 1) { ++len; q /= zma; }
2133 if (s) {
2134 s += len;
2135 do { *--s = 'a' + (u % zma) - (u < zma && len > 1); u /= zma; } while(u);
2136 /* handles u == 0 */
2137 }
2138 s[len] = 0;
2139 }
2140
2141 static void highlightslinks (struct page *page, int xoff, int yoff,
2142 int noff, char *targ, int tlen, int hfsize)
2143 {
2144 int i;
2145 char buf[40];
2146 struct slink *slink;
2147 double x0, y0, x1, y1, w;
2148
2149 ensureslinks (page);
2150 glColor3ub (0xc3, 0xb0, 0x91);
2151 for (i = 0; i < page->slinkcount; ++i) {
2152 fmt_linkn (buf, i + noff);
2153 if (!tlen || !strncmp (targ, buf, tlen)) {
2154 slink = &page->slinks[i];
2155
2156 x0 = slink->bbox.x0 + xoff - 5;
2157 y1 = slink->bbox.y0 + yoff - 5;
2158 y0 = y1 + 10 + hfsize;
2159 w = measure_string (state.face, hfsize, buf);
2160 x1 = x0 + w + 10;
2161 glRectd (x0, y0, x1, y1);
2162 }
2163 }
2164
2165 glEnable (GL_BLEND);
2166 glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
2167 glEnable (GL_TEXTURE_2D);
2168 glColor3ub (0, 0, 0);
2169 for (i = 0; i < page->slinkcount; ++i) {
2170 fmt_linkn (buf, i + noff);
2171 if (!tlen || !strncmp (targ, buf, tlen)) {
2172 slink = &page->slinks[i];
2173
2174 x0 = slink->bbox.x0 + xoff;
2175 y0 = slink->bbox.y0 + yoff + hfsize;
2176 draw_string (state.face, hfsize, x0, y0, buf);
2177 }
2178 }
2179 glDisable (GL_TEXTURE_2D);
2180 glDisable (GL_BLEND);
2181 }
2182
2183
2184 static void uploadslice (struct tile *tile, struct slice *slice)
2185 {
2186 int offset;
2187 struct slice *slice1;
2188 unsigned char *texdata;
2189
2190 offset = 0;
2191 for (slice1 = tile->slices; slice != slice1; slice1++) {
2192 offset += slice1->h * tile->w * tile->pixmap->n;
2193 }
2194 if (slice->texindex != -1 && slice->texindex < state.texcount
2195 && state.texowners[slice->texindex].slice == slice) {
2196 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[slice->texindex]);
2197 }
2198 else {
2199 int subimage = 0;
2200 int texindex = state.texindex++ % state.texcount;
2201
2202 if (state.texowners[texindex].w == tile->w) {
2203 if (state.texowners[texindex].h >= slice->h) {
2204 subimage = 1;
2205 }
2206 else {
2207 state.texowners[texindex].h = slice->h;
2208 }
2209 }
2210 else {
2211 state.texowners[texindex].h = slice->h;
2212 }
2213
2214 state.texowners[texindex].w = tile->w;
2215 state.texowners[texindex].slice = slice;
2216 slice->texindex = texindex;
2217
2218 glBindTexture (GL_TEXTURE_RECTANGLE_ARB, state.texids[texindex]);
2219 if (tile->pbo) {
2220 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
2221 texdata = 0;
2222 }
2223 else {
2224 texdata = tile->pixmap->samples;
2225 }
2226 if (subimage) {
2227 glTexSubImage2D (GL_TEXTURE_RECTANGLE_ARB,
2228 0,
2229 0,
2230 0,
2231 tile->w,
2232 slice->h,
2233 state.texform,
2234 state.texty,
2235 texdata+offset
2236 );
2237 }
2238 else {
2239 glTexImage2D (GL_TEXTURE_RECTANGLE_ARB,
2240 0,
2241 state.texiform,
2242 tile->w,
2243 slice->h,
2244 0,
2245 state.texform,
2246 state.texty,
2247 texdata+offset
2248 );
2249 }
2250 if (tile->pbo) {
2251 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
2252 }
2253 }
2254 }
2255
2256 CAMLprim value ml_drawtile (value args_v, value ptr_v)
2257 {
2258 CAMLparam2 (args_v, ptr_v);
2259 int dispx = Int_val (Field (args_v, 0));
2260 int dispy = Int_val (Field (args_v, 1));
2261 int dispw = Int_val (Field (args_v, 2));
2262 int disph = Int_val (Field (args_v, 3));
2263 int tilex = Int_val (Field (args_v, 4));
2264 int tiley = Int_val (Field (args_v, 5));
2265 char *s = String_val (ptr_v);
2266 struct tile *tile = parse_pointer ("ml_drawtile", s);
2267
2268 glEnable (GL_TEXTURE_RECTANGLE_ARB);
2269 {
2270 int slicey, firstslice;
2271 struct slice *slice;
2272
2273 firstslice = tiley / tile->sliceheight;
2274 slice = &tile->slices[firstslice];
2275 slicey = tiley % tile->sliceheight;
2276
2277 while (disph > 0) {
2278 int dh;
2279
2280 dh = slice->h - slicey;
2281 dh = MIN (disph, dh);
2282 uploadslice (tile, slice);
2283
2284 glBegin (GL_QUADS);
2285 {
2286 glTexCoord2i (tilex, slicey);
2287 glVertex2i (dispx, dispy);
2288
2289 glTexCoord2i (tilex+dispw, slicey);
2290 glVertex2i (dispx+dispw, dispy);
2291
2292 glTexCoord2i (tilex+dispw, slicey+dh);
2293 glVertex2i (dispx+dispw, dispy+dh);
2294
2295 glTexCoord2i (tilex, slicey+dh);
2296 glVertex2i (dispx, dispy+dh);
2297 }
2298 glEnd ();
2299
2300 dispy += dh;
2301 disph -= dh;
2302 slice++;
2303 ARSERT (!(slice - tile->slices >= tile->slicecount && disph > 0));
2304 slicey = 0;
2305 }
2306 }
2307 glDisable (GL_TEXTURE_RECTANGLE_ARB);
2308 CAMLreturn (Val_unit);
2309 }
2310
2311 CAMLprim value ml_postprocess (value ptr_v, value hlinks_v,
2312 value xoff_v, value yoff_v,
2313 value li_v)
2314 {
2315 CAMLparam5 (ptr_v, hlinks_v, xoff_v, yoff_v, li_v);
2316 int xoff = Int_val (xoff_v);
2317 int yoff = Int_val (yoff_v);
2318 int noff = Int_val (Field (li_v, 0));
2319 char *targ = String_val (Field (li_v, 1));
2320 int tlen = caml_string_length (Field (li_v, 1));
2321 int hfsize = Int_val (Field (li_v, 2));
2322 char *s = String_val (ptr_v);
2323 int hlmask = Int_val (hlinks_v);
2324 struct page *page = parse_pointer ("ml_postprocess", s);
2325
2326 if (!page->u.ptr) {
2327 /* deal with loadpage failed pages */
2328 goto done;
2329 }
2330
2331 if (hlmask & 1) highlightlinks (page, xoff, yoff);
2332 if (trylock ("ml_postprocess")) {
2333 noff = 0;
2334 goto done;
2335 }
2336 if (hlmask & 2) {
2337 highlightslinks (page, xoff, yoff, noff, targ, tlen, hfsize);
2338 noff = page->slinkcount;
2339 }
2340 showsel (page, xoff, yoff);
2341 unlock ("ml_postprocess");
2342
2343 done:
2344 CAMLreturn (Val_int (noff));
2345 }
2346
2347 static fz_link *getlink (struct page *page, int x, int y)
2348 {
2349 fz_point p;
2350 fz_matrix ctm;
2351 fz_link *link, *links;
2352
2353 switch (page->type) {
2354 case DPDF:
2355 ctm = trimctm (page->u.pdfpage, page->pdimno);
2356 links = page->u.pdfpage->links;
2357 break;
2358
2359 case DXPS:
2360 ctm = fz_identity;
2361 links = page->u.xpspage->links;
2362 break;
2363
2364 default:
2365 return NULL;
2366 }
2367 p.x = x;
2368 p.y = y;
2369
2370 ctm = fz_concat (ctm, state.pagedims[page->pdimno].ctm);
2371 ctm = fz_invert_matrix (ctm);
2372 p = fz_transform_point (ctm, p);
2373
2374 for (link = links; link; link = link->next) {
2375 if (p.x >= link->rect.x0 && p.x <= link->rect.x1) {
2376 if (p.y >= link->rect.y0 && p.y <= link->rect.y1) {
2377 return link;
2378 }
2379 }
2380 }
2381 return NULL;
2382 }
2383
2384 static void ensuretext (struct page *page)
2385 {
2386 if (state.gen != page->tgen) {
2387 droptext (page);
2388 page->tgen = state.gen;
2389 }
2390 if (!page->text) {
2391 fz_device *tdev;
2392
2393 page->text = fz_new_text_page (state.ctx, fz_infinite_rect);
2394 page->sheet = fz_new_text_sheet (state.ctx);
2395 tdev = fz_new_text_device (state.ctx, page->sheet, page->text);
2396 fz_run_display_list (page->dlist,
2397 tdev,
2398 pagectm (page),
2399 fz_infinite_rect, NULL);
2400 qsort (page->text->blocks, page->text->len,
2401 sizeof (*page->text->blocks), compareblocks);
2402 fz_free_device (tdev);
2403 }
2404 }
2405
2406 CAMLprim value ml_find_page_with_links (value start_page_v, value dir_v)
2407 {
2408 CAMLparam2 (start_page_v, dir_v);
2409 CAMLlocal1 (ret_v);
2410 int i, dir = Int_val (dir_v);
2411 int start_page = Int_val (start_page_v);
2412 int end_page = dir > 0 ? state.pagecount : -1;
2413
2414 ret_v = Val_int (0);
2415 if (!(state.type == DPDF || state.type == DXPS)) {
2416 goto done;
2417 }
2418
2419 lock ("ml_findpage_with_links");
2420 for (i = start_page + dir; i != end_page; i += dir) {
2421 int found;
2422
2423 switch (state.type) {
2424 case DPDF:
2425 {
2426 pdf_page *page = NULL;
2427
2428 fz_try (state.ctx) {
2429 page = pdf_load_page (state.u.pdf, i);
2430 found = !!page->links;
2431 }
2432 fz_catch (state.ctx) {
2433 found = 0;
2434 }
2435 if (page) {
2436 freepdfpage (page);
2437 }
2438 }
2439 break;
2440 case DXPS:
2441 {
2442 xps_page *page = xps_load_page (state.u.xps, i);
2443 found = !!page->links;
2444 freexpspage (page);
2445 }
2446 break;
2447
2448 default:
2449 ARSERT ("invalid document type");
2450 }
2451
2452 if (found) {
2453 ret_v = caml_alloc_small (1, 1);
2454 Field (ret_v, 0) = Val_int (i);
2455 goto unlock;
2456 }
2457 }
2458 unlock:
2459 unlock ("ml_findpage_with_links");
2460
2461 done:
2462 CAMLreturn (ret_v);
2463 }
2464
2465 enum { dir_first, dir_last};
2466 enum { dir_first_visible, dir_left, dir_right, dir_down, dir_up };
2467
2468 CAMLprim value ml_findlink (value ptr_v, value dir_v)
2469 {
2470 CAMLparam2 (ptr_v, dir_v);
2471 CAMLlocal2 (ret_v, pos_v);
2472 struct page *page;
2473 int dirtag, i, slinkindex;
2474 struct slink *found = NULL ,*slink;
2475 char *s = String_val (ptr_v);
2476
2477 page = parse_pointer ("ml_findlink", s);
2478 ret_v = Val_int (0);
2479 if (trylock ("ml_findlink")) {
2480 goto done;
2481 }
2482
2483 ensureslinks (page);
2484
2485 if (Is_block (dir_v)) {
2486 dirtag = Tag_val (dir_v);
2487 switch (dirtag) {
2488 case dir_first_visible:
2489 {
2490 int x0, y0, dir, first_index, last_index;
2491
2492 pos_v = Field (dir_v, 0);
2493 x0 = Int_val (Field (pos_v, 0));
2494 y0 = Int_val (Field (pos_v, 1));
2495 dir = Int_val (Field (pos_v, 2));
2496
2497 if (dir >= 0) {
2498 dir = 1;
2499 first_index = 0;
2500 last_index = page->slinkcount;
2501 }
2502 else {
2503 first_index = page->slinkcount - 1;
2504 last_index = -1;
2505 }
2506
2507 for (i = first_index; i != last_index; i += dir) {
2508 slink = &page->slinks[i];
2509 if (slink->bbox.y0 >= y0 && slink->bbox.x0 >= x0) {
2510 found = slink;
2511 break;
2512 }
2513 }
2514 }
2515 break;
2516
2517 case dir_left:
2518 slinkindex = Int_val (Field (dir_v, 0));
2519 found = &page->slinks[slinkindex];
2520 for (i = slinkindex - 1; i >= 0; --i) {
2521 slink = &page->slinks[i];
2522 if (slink->bbox.x0 < found->bbox.x0) {
2523 found = slink;
2524 break;
2525 }
2526 }
2527 break;
2528
2529 case dir_right:
2530 slinkindex = Int_val (Field (dir_v, 0));
2531 found = &page->slinks[slinkindex];
2532 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2533 slink = &page->slinks[i];
2534 if (slink->bbox.x0 > found->bbox.x0) {
2535 found = slink;
2536 break;
2537 }
2538 }
2539 break;
2540
2541 case dir_down:
2542 slinkindex = Int_val (Field (dir_v, 0));
2543 found = &page->slinks[slinkindex];
2544 for (i = slinkindex + 1; i < page->slinkcount; ++i) {
2545 slink = &page->slinks[i];
2546 if (slink->bbox.y0 >= found->bbox.y0) {
2547 found = slink;
2548 break;
2549 }
2550 }
2551 break;
2552
2553 case dir_up:
2554 slinkindex = Int_val (Field (dir_v, 0));
2555 found = &page->slinks[slinkindex];
2556 for (i = slinkindex - 1; i >= 0; --i) {
2557 slink = &page->slinks[i];
2558 if (slink->bbox.y0 <= found->bbox.y0) {
2559 found = slink;
2560 break;
2561 }
2562 }
2563 break;
2564 }
2565 }
2566 else {
2567 dirtag = Int_val (dir_v);
2568 switch (dirtag) {
2569 case dir_first:
2570 found = page->slinks;
2571 break;
2572
2573 case dir_last:
2574 if (page->slinks) {
2575 found = page->slinks + (page->slinkcount - 1);
2576 }
2577 break;
2578 }
2579 }
2580 if (found) {
2581 ret_v = caml_alloc_small (2, 1);
2582 Field (ret_v, 0) = Val_int (found - page->slinks);
2583 }
2584
2585 unlock ("ml_findlink");
2586 done:
2587 CAMLreturn (ret_v);
2588 }
2589
2590 enum { uuri, ugoto, utext, uunexpected, ulaunch, unamed, uremote };
2591
2592 #define LINKTOVAL \
2593 { \
2594 int pageno; \
2595 \
2596 switch (link->dest.kind) { \
2597 case FZ_LINK_GOTO: \
2598 { \
2599 fz_point p; \
2600 \
2601 pageno = link->dest.ld.gotor.page; \
2602 p.x = 0; \
2603 p.y = 0; \
2604 \
2605 if (link->dest.ld.gotor.flags & fz_link_flag_t_valid) { \
2606 p.y = link->dest.ld.gotor.lt.y; \
2607 p = fz_transform_point (pdim->lctm, p); \
2608 } \
2609 tup_v = caml_alloc_tuple (2); \
2610 ret_v = caml_alloc_small (1, ugoto); \
2611 Field (tup_v, 0) = Val_int (pageno); \
2612 Field (tup_v, 1) = Val_int (p.y); \
2613 Field (ret_v, 0) = tup_v; \
2614 } \
2615 break; \
2616 \
2617 case FZ_LINK_URI: \
2618 str_v = caml_copy_string (link->dest.ld.uri.uri); \
2619 ret_v = caml_alloc_small (1, uuri); \
2620 Field (ret_v, 0) = str_v; \
2621 break; \
2622 \
2623 case FZ_LINK_LAUNCH: \
2624 str_v = caml_copy_string (link->dest.ld.launch.file_spec); \
2625 ret_v = caml_alloc_small (1, ulaunch); \
2626 Field (ret_v, 0) = str_v; \
2627 break; \
2628 \
2629 case FZ_LINK_NAMED: \
2630 str_v = caml_copy_string (link->dest.ld.named.named); \
2631 ret_v = caml_alloc_small (1, unamed); \
2632 Field (ret_v, 0) = str_v; \
2633 break; \
2634 \
2635 case FZ_LINK_GOTOR: \
2636 str_v = caml_copy_string (link->dest.ld.gotor.file_spec); \
2637 pageno = link->dest.ld.gotor.page; \
2638 tup_v = caml_alloc_tuple (2); \
2639 ret_v = caml_alloc_small (1, uremote); \
2640 Field (tup_v, 0) = str_v; \
2641 Field (tup_v, 1) = Val_int (pageno); \
2642 Field (ret_v, 0) = tup_v; \
2643 break; \
2644 \
2645 default: \
2646 { \
2647 char buf[80]; \
2648 \
2649 snprintf (buf, sizeof (buf), \
2650 "unhandled link kind %d", link->dest.kind); \
2651 str_v = caml_copy_string (buf); \
2652 ret_v = caml_alloc_small (1, uunexpected); \
2653 Field (ret_v, 0) = str_v; \
2654 } \
2655 break; \
2656 } \
2657 }
2658
2659 CAMLprim value ml_getlink (value ptr_v, value n_v)
2660 {
2661 CAMLparam2 (ptr_v, n_v);
2662 CAMLlocal3 (ret_v, tup_v, str_v);
2663 fz_link *link;
2664 struct page *page;
2665 struct pagedim *pdim;
2666 char *s = String_val (ptr_v);
2667
2668 ret_v = Val_int (0);
2669 if (trylock ("ml_getlink")) {
2670 goto done;
2671 }
2672
2673 page = parse_pointer ("ml_getlink", s);
2674 ensureslinks (page);
2675 pdim = &state.pagedims[page->pdimno];
2676 link = page->slinks[Int_val (n_v)].link;
2677 LINKTOVAL;
2678
2679 unlock ("ml_getlink");
2680 done:
2681 CAMLreturn (ret_v);
2682 }
2683
2684 CAMLprim value ml_getlinkcount (value ptr_v)
2685 {
2686 CAMLparam1 (ptr_v);
2687 struct page *page;
2688 char *s = String_val (ptr_v);
2689
2690 page = parse_pointer ("ml_getlinkcount", s);
2691 CAMLreturn (Val_int (page->slinkcount));
2692 }
2693
2694 CAMLprim value ml_getlinkrect (value ptr_v, value n_v)
2695 {
2696 CAMLparam2 (ptr_v, n_v);
2697 CAMLlocal1 (ret_v);
2698 struct page *page;
2699 struct slink *slink;
2700 char *s = String_val (ptr_v);
2701
2702 page = parse_pointer ("ml_getlinkrect", s);
2703 ret_v = caml_alloc_tuple (4);
2704 if (trylock ("ml_getlinkrect")) {
2705 Field (ret_v, 0) = Val_int (0);
2706 Field (ret_v, 1) = Val_int (0);
2707 Field (ret_v, 2) = Val_int (0);
2708 Field (ret_v, 3) = Val_int (0);
2709 goto done;
2710 }
2711 ensureslinks (page);
2712
2713 slink = &page->slinks[Int_val (n_v)];
2714 Field (ret_v, 0) = Val_int (slink->bbox.x0);
2715 Field (ret_v, 1) = Val_int (slink->bbox.y0);
2716 Field (ret_v, 2) = Val_int (slink->bbox.x1);
2717 Field (ret_v, 3) = Val_int (slink->bbox.y1);
2718 unlock ("ml_getlinkrect");
2719
2720 done:
2721 CAMLreturn (ret_v);
2722 }
2723
2724 CAMLprim value ml_whatsunder (value ptr_v, value x_v, value y_v)
2725 {
2726 CAMLparam3 (ptr_v, x_v, y_v);
2727 CAMLlocal3 (ret_v, tup_v, str_v);
2728 fz_link *link;
2729 struct page *page;
2730 char *s = String_val (ptr_v);
2731 int x = Int_val (x_v), y = Int_val (y_v);
2732 struct pagedim *pdim;
2733
2734 ret_v = Val_int (0);
2735 if (trylock ("ml_whatsunder")) {
2736 goto done;
2737 }
2738
2739 page = parse_pointer ("ml_whatsunder", s);
2740 pdim = &state.pagedims[page->pdimno];
2741 x += pdim->bounds.x0;
2742 y += pdim->bounds.y0;
2743 link = getlink (page, x, y);
2744 if (link) {
2745 LINKTOVAL;
2746 }
2747 else {
2748 fz_rect *b;
2749 fz_text_block *block;
2750
2751 ensuretext (page);
2752 for (block = page->text->blocks;
2753 block < page->text->blocks + page->text->len;
2754 ++block) {
2755 fz_text_line *line;
2756
2757 b = &block->bbox;
2758 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2759 continue;
2760
2761 for (line = block->lines;
2762 line < block->lines + block->len;
2763 ++line) {
2764 fz_text_span *span;
2765
2766 b = &line->bbox;
2767 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2768 continue;
2769
2770 for (span = line->spans;
2771 span < line->spans + line->len;
2772 ++span) {
2773 fz_text_char *ch;
2774
2775 b = &span->bbox;
2776 if (!(x >= b->x0 && x <= b->x1 && y >= b->y0 && y <= b->y1))
2777 continue;
2778
2779 for (ch = span->text; ch < span->text + span->len; ++ch) {
2780 b = &ch->bbox;
2781
2782 if (x >= b->x0 && x <= b->x1
2783 && y >= b->y0 && y <= b->y1) {
2784 const char *n2 =
2785 span->style->font && span->style->font->name
2786 ? span->style->font->name
2787 : "Span has no font name"
2788 ;
2789 FT_FaceRec *face = span->style->font->ft_face;
2790 if (face && face->family_name) {
2791 char *s;
2792 char *n1 = face->family_name;
2793 size_t l1 = strlen (n1);
2794 size_t l2 = strlen (n2);
2795
2796 if (l1 != l2 || memcmp (n1, n2, l1)) {
2797 s = malloc (l1 + l2 + 2);
2798 if (s) {
2799 memcpy (s, n2, l2);
2800 s[l2] = '=';
2801 memcpy (s + l2 + 1, n1, l1 + 1);
2802 str_v = caml_copy_string (s);
2803 free (s);
2804 }
2805 }
2806 }
2807 if (str_v == 0) {
2808 str_v = caml_copy_string (n2);
2809 }
2810 ret_v = caml_alloc_small (1, utext);
2811 Field (ret_v, 0) = str_v;
2812 goto unlock;
2813 }
2814 }
2815 }
2816 }
2817 }
2818 }
2819 unlock:
2820 unlock ("ml_whatsunder");
2821
2822 done:
2823 CAMLreturn (ret_v);
2824 }
2825
2826 CAMLprim value ml_seltext (value ptr_v, value rect_v)
2827 {
2828 CAMLparam2 (ptr_v, rect_v);
2829 fz_rect *b;
2830 struct page *page;
2831 struct pagedim *pdim;
2832 int i, x0, x1, y0, y1;
2833 char *s = String_val (ptr_v);
2834 int fi = 0, li = 0;
2835 fz_text_block *block;
2836 fz_text_span *span, *fspan, *lspan;
2837 fz_text_line *line, *fline = NULL, *lline = NULL;
2838
2839 if (trylock ("ml_seltext")) {
2840 goto done;
2841 }
2842
2843 page = parse_pointer ("ml_seltext", s);
2844 ensuretext (page);
2845
2846 pdim = &state.pagedims[page->pdimno];
2847 x0 = Int_val (Field (rect_v, 0)) + pdim->bounds.x0;;
2848 y0 = Int_val (Field (rect_v, 1)) + pdim->bounds.y0;
2849 x1 = Int_val (Field (rect_v, 2)) + pdim->bounds.x0;
2850 y1 = Int_val (Field (rect_v, 3)) + pdim->bounds.y0;
2851
2852 if (0) {
2853 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2854 glColor3ub (128, 128, 128);
2855 glRecti (x0, y0, x1, y1);
2856 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2857 }
2858
2859 fspan = lspan = NULL;
2860
2861 for (block = page->text->blocks;
2862 block < page->text->blocks + page->text->len;
2863 ++block) {
2864 for (line = block->lines;
2865 line < block->lines + block->len;
2866 ++line) {
2867 for (span = line->spans;
2868 span < line->spans + line->len;
2869 ++span) {
2870 for (i = 0; i < span->len; ++i) {
2871 b = &span->text[i].bbox;
2872 int selected = 0;
2873
2874 if (x0 >= b->x0 && x0 <= b->x1
2875 && y0 >= b->y0 && y0 <= b->y1) {
2876 fspan = span;
2877 fline = line;
2878 fi = i;
2879 selected = 1;
2880 }
2881 if (x1 >= b->x0 && x1 <= b->x1
2882 && y1 >= b->y0 && y1 <= b->y1) {
2883 lspan = span;
2884 lline = line;
2885 li = i;
2886 selected = 1;
2887 }
2888 if (0 && selected) {
2889 glPolygonMode (GL_FRONT_AND_BACK, GL_LINE);
2890 glColor3ub (128, 128, 128);
2891 glRecti (b->x0, b->y0, b->x1, b->y1);
2892 glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
2893 }
2894 }
2895 }
2896 }
2897 }
2898 if (y1 < y0 || x1 < x0) {
2899 int swap = 0;
2900
2901 if (fspan == lspan) {
2902 swap = 1;
2903 }
2904 else {
2905 if (y1 < y0) {
2906 if (fline != lline) {
2907 swap = 1;
2908 }
2909 }
2910 }
2911
2912 if (swap) {
2913 i = fi;
2914 span = fspan;
2915
2916 fi = li;
2917 fspan = lspan;
2918
2919 li = i;
2920 lspan = span;
2921 }
2922 }
2923
2924 page->fmark.i = fi;
2925 page->fmark.span = fspan;
2926
2927 page->lmark.i = li;
2928 page->lmark.span = lspan;
2929
2930 unlock ("ml_seltext");
2931
2932 done:
2933 CAMLreturn (Val_unit);
2934 }
2935
2936 static int UNUSED_ATTR pipespan (FILE *f, fz_text_span *span, int a, int b)
2937 {
2938 char buf[4];
2939 int i, len, ret;
2940
2941 for (i = a; i <= b; ++i) {
2942 len = fz_runetochar (buf, span->text[i].c);
2943 ret = fwrite (buf, len, 1, f);
2944
2945 if (ret != 1) {
2946 fprintf (stderr, "failed to write %d bytes ret=%d: %s\n",
2947 len, ret, strerror (errno));
2948 return -1;
2949 }
2950 }
2951 return 0;
2952 }
2953
2954 #ifdef __CYGWIN__
2955 value ml_popen (value UNUSED_ATTR u1, value UNUSED_ATTR u2)
2956 {
2957 caml_failwith ("ml_popen not implemented under Cygwin");
2958 }
2959 #else
2960 CAMLprim value ml_popen (value command_v, value fds_v)
2961 {
2962 CAMLparam2 (command_v, fds_v);
2963 CAMLlocal2 (l_v, tup_v);
2964 int ret;
2965 char *msg = NULL;
2966 value earg_v = Nothing;
2967 posix_spawnattr_t attr;
2968 posix_spawn_file_actions_t fa;
2969 char *argv[] = { "/bin/sh", "-c", String_val (command_v), NULL };
2970
2971 if ((ret = posix_spawn_file_actions_init (&fa)) != 0) {
2972 unix_error (ret, "posix_spawn_file_actions_init", Nothing);
2973 }
2974
2975 if ((ret = posix_spawnattr_init (&attr)) != 0) {
2976 msg = "posix_spawnattr_init";
2977 goto fail1;
2978 }
2979
2980 #ifdef POSIX_SPAWN_USEVFORK
2981 if ((ret = posix_spawnattr_setflags (&attr, POSIX_SPAWN_USEVFORK)) != 0) {
2982 msg = "posix_spawnattr_setflags POSIX_SPAWN_USEVFORK";
2983 goto fail;
2984 }
2985 #endif
2986
2987 for (l_v = fds_v; l_v != Val_int (0); l_v = Field (l_v, 1)) {
2988 int fd1, fd2;
2989
2990 tup_v = Field (l_v, 0);
2991 fd1 = Int_val (Field (tup_v, 0));
2992 fd2 = Int_val (Field (tup_v, 1));
2993 if (fd2 < 0) {
2994 if ((ret = posix_spawn_file_actions_addclose (&fa, fd1)) != 0) {
2995 msg = "posix_spawn_file_actions_addclose";
2996 earg_v = tup_v;
2997 goto fail;
2998 }
2999 }
3000 else {
3001 if ((ret = posix_spawn_file_actions_adddup2 (&fa, fd1, fd2)) != 0) {
3002 msg = "posix_spawn_file_actions_adddup2";
3003 earg_v = tup_v;
3004 goto fail;
3005 }
3006 }
3007 }
3008
3009 if ((ret = posix_spawn (NULL, "/bin/sh", &fa, &attr, argv, environ))) {
3010 msg = "posix_spawn";
3011 goto fail;
3012 }
3013
3014 fail:
3015 if ((ret = posix_spawnattr_destroy (&attr)) != 0) {
3016 fprintf (stderr, "posix_spawnattr_destroy: %s\n", strerror (ret));
3017 }
3018
3019 fail1:
3020 if ((ret = posix_spawn_file_actions_destroy (&fa)) != 0) {
3021 fprintf (stderr, "posix_spawn_file_actions_destroy: %s\n",
3022 strerror (ret));
3023 }
3024
3025 if (msg)
3026 unix_error (ret, msg, earg_v);
3027
3028 CAMLreturn (Val_unit);
3029 }
3030 #endif
3031
3032 CAMLprim value ml_copysel (value fd_v, value ptr_v)
3033 {
3034 CAMLparam1 (ptr_v);
3035 FILE *f;
3036 int seen = 0;
3037 struct page *page;
3038 fz_text_line *line;
3039 fz_text_span *span;
3040 fz_text_block *block;
3041 int fd = Int_val (fd_v);
3042 char *s = String_val (ptr_v);
3043
3044 if (trylock ("ml_copysel")) {
3045 goto done;
3046 }
3047
3048 page = parse_pointer ("ml_sopysel", s);
3049
3050 if (!page->fmark.span || !page->lmark.span) {
3051 fprintf (stderr, "nothing to copy\n");
3052 goto unlock;
3053 }
3054
3055 f = fdopen (fd, "w");
3056 if (!f) {
3057 fprintf (stderr, "failed to fopen sel pipe: %s\n",
3058 strerror (errno));
3059 f = stdout;
3060 }
3061
3062 for (block = page->text->blocks;
3063 block < page->text->blocks + page->text->len;
3064 ++block) {
3065 for (line = block->lines;
3066 line < block->lines + block->len;
3067 ++line) {
3068 for (span = line->spans;
3069 span < line->spans + line->len;
3070 ++span) {
3071 int a, b;
3072
3073 seen |= span == page->fmark.span || span == page->lmark.span;
3074 a = span == page->fmark.span ? page->fmark.i : 0;
3075 b = span == page->lmark.span ? page->lmark.i : span->len - 1;
3076
3077 if (seen) {
3078 if (pipespan (f, span, a, b)) {
3079 goto close;
3080 }
3081 if (span == line->spans + line->len - 1) {
3082 if (putc ('\n', f) == EOF) {
3083 fprintf (stderr,
3084 "failed break line on sel pipe: %s\n",
3085 strerror (errno));
3086 goto close;
3087 }
3088 }
3089 if (span == page->lmark.span) {
3090 goto endloop;
3091 }
3092 }
3093 }
3094 }
3095 }
3096 endloop:
3097 page->lmark.span = NULL;
3098 page->fmark.span = NULL;
3099
3100 close:
3101 if (f != stdout) {
3102 int ret = fclose (f);
3103 fd = -1;
3104 if (ret == -1) {
3105 if (errno != ECHILD) {
3106 fprintf (stderr, "failed to close sel pipe: %s\n",
3107 strerror (errno));
3108 }
3109 }
3110 }
3111 unlock:
3112 unlock ("ml_copysel");
3113
3114 done:
3115 if (fd >= 0) {
3116 if (close (fd)) {
3117 fprintf (stderr, "failed to close sel pipe: %s\n",
3118 strerror (errno));
3119 }
3120 }
3121 CAMLreturn (Val_unit);
3122 }
3123
3124 CAMLprim value ml_getpdimrect (value pagedimno_v)
3125 {
3126 CAMLparam1 (pagedimno_v);
3127 CAMLlocal1 (ret_v);
3128 int pagedimno = Int_val (pagedimno_v);
3129 fz_rect box;
3130
3131 ret_v = caml_alloc_small (4 * Double_wosize, Double_array_tag);
3132 if (trylock ("ml_getpdimrect")) {
3133 box = fz_empty_rect;
3134 }
3135 else {
3136 box = state.pagedims[pagedimno].mediabox;
3137 unlock ("ml_getpdimrect");
3138 }
3139
3140 Store_double_field (ret_v, 0, box.x0);
3141 Store_double_field (ret_v, 1, box.x1);
3142 Store_double_field (ret_v, 2, box.y0);
3143 Store_double_field (ret_v, 3, box.y1);
3144
3145 CAMLreturn (ret_v);
3146 }
3147
3148 static double getmaxw (void)
3149 {
3150 int i;
3151 struct pagedim *p;
3152 double maxw = 0.0;
3153
3154 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3155 double x0, x1, w;
3156
3157 x0 = MIN (p->mediabox.x0, p->mediabox.x1);
3158 x1 = MAX (p->mediabox.x0, p->mediabox.x1);
3159
3160 w = x1 - x0;
3161 maxw = MAX (w, maxw);
3162 }
3163 return maxw;
3164 }
3165
3166 CAMLprim value ml_getmaxw (value unit_v)
3167 {
3168 CAMLparam1 (unit_v);
3169 CAMLlocal1 (ret_v);
3170 double maxw = 0.0;
3171
3172 if (trylock ("ml_getmaxw")) {
3173 goto done;
3174 }
3175 maxw = getmaxw ();
3176 unlock ("ml_getmaxw");
3177 done:
3178 ret_v = caml_copy_double (maxw);
3179 CAMLreturn (ret_v);
3180 }
3181
3182 CAMLprim value ml_zoom_for_height (value winw_v, value winh_v,
3183 value dw_v, value cols_v)
3184 {
3185 CAMLparam3 (winw_v, winh_v, dw_v);
3186 CAMLlocal1 (ret_v);
3187 int i;
3188 double zoom = 1.0;
3189 double maxw = 0.0, maxh = 0.0;
3190 struct pagedim *p;
3191 double winw = Int_val (winw_v);
3192 double winh = Int_val (winh_v);
3193 double dw = Int_val (dw_v);
3194 double cols = Int_val (cols_v);
3195 double pw = 1.0, ph = 1.0, aspect;
3196
3197 if (trylock ("ml_zoom_for_height")) {
3198 goto done;
3199 }
3200
3201 if (state.proportional) {
3202 maxw = getmaxw () / cols;
3203 }
3204
3205 for (i = 0, p = state.pagedims; i < state.pagedimcount; ++i, ++p) {
3206 double x0, x1, y0, y1, w, h, scaledh, scale;
3207 fz_rect rect;
3208
3209 rect = fz_transform_rect (fz_rotate (p->rotate + state.rotate),
3210 p->mediabox);
3211 x0 = MIN (rect.x0, rect.x1);
3212 x1 = MAX (rect.x0, rect.x1);
3213 y0 = MIN (rect.y0, rect.y1);
3214 y1 = MAX (rect.y0, rect.y1);
3215
3216 w = (x1 - x0) / cols;
3217 h = y1 - y0;
3218
3219 if (state.proportional) {
3220 scale = w / maxw;
3221 scaledh = h * scale;
3222 }
3223 else {
3224 scale = 1.0;
3225 scaledh = h;
3226 }
3227
3228 if (scaledh > maxh) {
3229 maxh = scaledh;
3230 ph = scaledh;
3231 pw = w * scale;
3232 }
3233 }
3234
3235 aspect = pw / ph;
3236 zoom = (winh * aspect + dw) / winw;
3237
3238 unlock ("ml_zoom_for_height");
3239 done:
3240 ret_v = caml_copy_double (zoom);
3241 CAMLreturn (ret_v);
3242 }
3243
3244 CAMLprim value ml_draw_string (value pt_v, value x_v, value y_v, value string_v)
3245 {
3246 CAMLparam4 (pt_v, x_v, y_v, string_v);
3247 CAMLlocal1 (ret_v);
3248 int pt = Int_val(pt_v);
3249 int x = Int_val (x_v);
3250 int y = Int_val (y_v);
3251 double w;
3252
3253 w = draw_string (state.face, pt, x, y, String_val (string_v));
3254 ret_v = caml_copy_double (w);
3255 CAMLreturn (ret_v);
3256 }
3257
3258 CAMLprim value ml_measure_string (value pt_v, value string_v)
3259 {
3260 CAMLparam2 (pt_v, string_v);
3261 CAMLlocal1 (ret_v);
3262 int pt = Int_val (pt_v);
3263 double w;
3264
3265 w = measure_string (state.face, pt, String_val (string_v));
3266 ret_v = caml_copy_double (w);
3267 CAMLreturn (ret_v);
3268 }
3269
3270 CAMLprim value ml_getpagebox (value opaque_v)
3271 {
3272 CAMLparam1 (opaque_v);
3273 CAMLlocal1 (ret_v);
3274 fz_rect rect;
3275 fz_bbox bbox;
3276 fz_device *dev;
3277 char *s = String_val (opaque_v);
3278 struct page *page = parse_pointer ("ml_getpagebox", s);
3279
3280 ret_v = caml_alloc_tuple (4);
3281 dev = fz_new_bbox_device (state.ctx, &rect);
3282 dev->hints |= FZ_IGNORE_SHADE;
3283
3284 switch (page->type) {
3285 case DPDF:
3286 pdf_run_page (state.u.pdf, page->u.pdfpage, dev, pagectm (page), NULL);
3287 break;
3288
3289 case DXPS:
3290 xps_run_page (state.u.xps, page->u.xpspage, dev, pagectm (page), NULL);
3291 break;
3292
3293 default:
3294 rect = fz_infinite_rect;
3295 break;
3296 }
3297
3298 fz_free_device (dev);
3299 bbox = fz_round_rect (rect);
3300 Field (ret_v, 0) = Val_int (bbox.x0);
3301 Field (ret_v, 1) = Val_int (bbox.y0);
3302 Field (ret_v, 2) = Val_int (bbox.x1);
3303 Field (ret_v, 3) = Val_int (bbox.y1);
3304
3305 CAMLreturn (ret_v);
3306 }
3307
3308 CAMLprim value ml_setaalevel (value level_v)
3309 {
3310 CAMLparam1 (level_v);
3311
3312 state.aalevel = Int_val (level_v);
3313 CAMLreturn (Val_unit);
3314 }
3315
3316 #undef pixel
3317 #include <X11/Xlib.h>
3318 #include <GL/glx.h>
3319
3320 static struct {
3321 Display *dpy;
3322 GLXContext ctx;
3323 GLXDrawable drawable;
3324 } glx;
3325
3326 #include "keysym2ucs.c"
3327
3328 CAMLprim value ml_keysymtoutf8 (value keysym_v)
3329 {
3330 CAMLparam1 (keysym_v);
3331 CAMLlocal1 (str_v);
3332 KeySym keysym = Int_val (keysym_v);
3333 Rune rune;
3334 int len;
3335 char buf[5];
3336
3337 rune = keysym2ucs (keysym);
3338 len = fz_runetochar (buf, rune);
3339 buf[len] = 0;
3340 str_v = caml_copy_string (buf);
3341 CAMLreturn (str_v);
3342 }
3343
3344 CAMLprim value ml_glx (value win_v)
3345 {
3346 CAMLparam1 (win_v);
3347 XVisualInfo *visual;
3348 int screen, wid = Int_val (win_v);
3349 int attributes[] = { GLX_RGBA, GLX_DOUBLEBUFFER, None };
3350
3351 glx.dpy = XOpenDisplay (NULL);
3352 if (!glx.dpy) {
3353 caml_failwith ("XOpenDisplay");
3354 }
3355
3356 screen = DefaultScreen (glx.dpy);
3357 visual = glXChooseVisual (glx.dpy, screen, attributes);
3358 if (!visual) {
3359 XCloseDisplay (glx.dpy);
3360 glx.dpy = NULL;
3361 caml_failwith ("glXChooseVisual");
3362 }
3363
3364 glx.ctx = glXCreateContext (glx.dpy, visual, NULL, True);
3365 XFree (visual);
3366 if (!glx.ctx) {
3367 XCloseDisplay (glx.dpy);
3368 glx.dpy = NULL;
3369 caml_failwith ("glXCreateContext");
3370 }
3371
3372 if (!glXMakeCurrent (glx.dpy, wid, glx.ctx)) {
3373 glXDestroyContext (glx.dpy, glx.ctx);
3374 XCloseDisplay (glx.dpy);
3375 glx.dpy = NULL;
3376 glx.ctx = NULL;
3377 caml_failwith ("glXMakeCurrent");
3378 }
3379 glx.drawable = wid;
3380 CAMLreturn (Val_unit);
3381 }
3382
3383 CAMLprim value ml_swapb (value unit_v)
3384 {
3385 CAMLparam1 (unit_v);
3386 glXSwapBuffers (glx.dpy, glx.drawable);
3387 CAMLreturn (Val_unit);
3388 }
3389
3390 CAMLprim value ml_glxsync (value unit_v)
3391 {
3392 CAMLparam1 (unit_v);
3393 if (glx.dpy && glx.ctx) {
3394 glXWaitX ();
3395 glXWaitGL ();
3396 }
3397 CAMLreturn (Val_unit);
3398 }
3399
3400 enum { piunknown, pilinux, piosx, pisun, pifreebsd,
3401 pidragonflybsd, piopenbsd, pinetbsd, picygwin };
3402
3403 CAMLprim value ml_platform (value unit_v)
3404 {
3405 CAMLparam1 (unit_v);
3406 int platid = piunknown;
3407
3408 #if defined __linux__
3409 platid = pilinux;
3410 #elif defined __CYGWIN__
3411 platid = picygwin;
3412 #elif defined __DragonFly__
3413 platid = pidragonflybsd;
3414 #elif defined __FreeBSD__
3415 platid = pifreebsd;
3416 #elif defined __OpenBSD__
3417 platid = piopenbsd;
3418 #elif defined __NetBSD__
3419 platid = pinetbsd;
3420 #elif defined __sun__
3421 platid = pisun;
3422 #elif defined __APPLE__
3423 platid = piosx;
3424 #endif
3425 CAMLreturn (Val_int (platid));
3426 }
3427
3428 CAMLprim value ml_cloexec (value fd_v)
3429 {
3430 CAMLparam1 (fd_v);
3431 int fd = Int_val (fd_v);
3432
3433 if (fcntl (fd, F_SETFD, FD_CLOEXEC, 1)) {
3434 uerror ("fcntl", Nothing);
3435 }
3436 CAMLreturn (Val_unit);
3437 }
3438
3439 CAMLprim value ml_getpbo (value w_v, value h_v, value cs_v)
3440 {
3441 CAMLparam2 (w_v, h_v);
3442 CAMLlocal1 (ret_v);
3443 struct pbo *pbo;
3444 int w = Int_val (w_v);
3445 int h = Int_val (h_v);
3446 int cs = Int_val (cs_v);
3447
3448 if (state.pbo_usable) {
3449 pbo = calloc (sizeof (*pbo), 1);
3450 if (!pbo) {
3451 err (1, "calloc pbo");
3452 }
3453
3454 switch (cs) {
3455 case 0:
3456 case 1:
3457 pbo->size = w*h*4;
3458 break;
3459 case 2:
3460 pbo->size = w*h*2;
3461 break;
3462 default:
3463 errx (1, "ml_getpbo: invalid colorspace %d", cs);
3464 }
3465
3466 state.glGenBuffersARB (1, &pbo->id);
3467 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->id);
3468 state.glBufferDataARB (GL_PIXEL_UNPACK_BUFFER_ARB, pbo->size,
3469 NULL, GL_STREAM_DRAW);
3470 pbo->ptr = state.glMapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB,
3471 GL_READ_WRITE);
3472 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3473 if (!pbo->ptr) {
3474 fprintf (stderr, "glMapBufferARB failed: %#x\n", glGetError ());
3475 state.glDeleteBuffersARB (1, &pbo->id);
3476 free (pbo);
3477 ret_v = caml_copy_string ("0");
3478 }
3479 else {
3480 int res;
3481 char *s;
3482
3483 res = snprintf (NULL, 0, "%" FMT_ptr, pbo);
3484 if (res < 0) {
3485 err (1, "snprintf %" FMT_ptr " failed", pbo);
3486 }
3487 s = malloc (res+1);
3488 if (!s) {
3489 err (1, "malloc %d bytes failed", res+1);
3490 }
3491 res = sprintf (s, "%" FMT_ptr, pbo);
3492 if (res < 0) {
3493 err (1, "sprintf %" FMT_ptr " failed", pbo);
3494 }
3495 ret_v = caml_copy_string (s);
3496 free (s);
3497 }
3498 }
3499 else {
3500 ret_v = caml_copy_string ("0");
3501 }
3502 CAMLreturn (ret_v);
3503 }
3504
3505 CAMLprim value ml_freepbo (value s_v)
3506 {
3507 CAMLparam1 (s_v);
3508 char *s = String_val (s_v);
3509 struct tile *tile = parse_pointer ("ml_freepbo", s);
3510
3511 if (tile->pbo) {
3512 state.glDeleteBuffersARB (1, &tile->pbo->id);
3513 tile->pbo->id = -1;
3514 tile->pbo->ptr = NULL;
3515 tile->pbo->size = -1;
3516 }
3517 CAMLreturn (Val_unit);
3518 }
3519
3520 CAMLprim value ml_unmappbo (value s_v)
3521 {
3522 CAMLparam1 (s_v);
3523 char *s = String_val (s_v);
3524 struct tile *tile = parse_pointer ("ml_unmappbo", s);
3525
3526 if (tile->pbo) {
3527 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, tile->pbo->id);
3528 if (state.glUnmapBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB) == GL_FALSE) {
3529 errx (1, "glUnmapBufferARB failed: %#x\n", glGetError ());
3530 }
3531 tile->pbo->ptr = NULL;
3532 state.glBindBufferARB (GL_PIXEL_UNPACK_BUFFER_ARB, 0);
3533 }
3534 CAMLreturn (Val_unit);
3535 }
3536
3537 static void setuppbo (void)
3538 {
3539 #define GGPA(n) *(void (**) ()) &state.n = glXGetProcAddress ((GLubyte *) #n)
3540 GGPA (glBindBufferARB);
3541 if (state.glBindBufferARB) {
3542 GGPA (glUnmapBufferARB);
3543 if (state.glUnmapBufferARB) {
3544 GGPA (glMapBufferARB);
3545 if (state.glMapBufferARB) {
3546 GGPA (glBufferDataARB);
3547 if (state.glBufferDataARB) {
3548 GGPA (glGenBuffersARB);
3549 if (state.glGenBuffersARB) {
3550 GGPA (glDeleteBuffersARB);
3551 if (state.glDeleteBuffersARB) {
3552 state.pbo_usable = 1;
3553 }
3554 }
3555 }
3556 }
3557 }
3558 }
3559 #undef GGPA
3560 }
3561
3562 CAMLprim value ml_pbo_usable (value unit_v)
3563 {
3564 CAMLparam1 (unit_v);
3565 CAMLreturn (Val_bool (state.pbo_usable));
3566 }
3567
3568 CAMLprim value ml_unproject (value ptr_v, value x_v, value y_v)
3569 {
3570 CAMLparam3 (ptr_v, x_v, y_v);
3571 CAMLlocal2 (ret_v, tup_v);
3572 struct page *page;
3573 char *s = String_val (ptr_v);
3574 int x = Int_val (x_v), y = Int_val (y_v);
3575 struct pagedim *pdim;
3576 fz_point p;
3577 fz_matrix ctm;
3578
3579 page = parse_pointer ("ml_unproject", s);
3580 pdim = &state.pagedims[page->pdimno];
3581
3582 ret_v = Val_int (0);
3583 if (trylock ("ml_unproject")) {
3584 goto done;
3585 }
3586
3587 switch (page->type) {
3588 case DPDF:
3589 ctm = trimctm (page->u.pdfpage, page->pdimno);
3590 break;
3591
3592 default:
3593 ctm = fz_identity;
3594 break;
3595 }
3596 p.x = x;
3597 p.y = y;
3598
3599 ctm = fz_concat (ctm, pdim->ctm);
3600 ctm = fz_invert_matrix (ctm);
3601 p = fz_transform_point (ctm, p);
3602
3603 tup_v = caml_alloc_tuple (2);
3604 ret_v = caml_alloc_small (1, 1);
3605 Field (tup_v, 0) = Val_int (p.x);
3606 Field (tup_v, 1) = Val_int (p.y);
3607 Field (ret_v, 0) = tup_v;
3608
3609 unlock ("ml_unproject");
3610 done:
3611 CAMLreturn (ret_v);
3612 }
3613
3614 CAMLprim value ml_init (value pipe_v, value params_v)
3615 {
3616 CAMLparam2 (pipe_v, params_v);
3617 CAMLlocal2 (trim_v, fuzz_v);
3618 int ret;
3619 int texcount;
3620 char *fontpath;
3621 int colorspace;
3622 int mustoresize;
3623 int haspboext;
3624 struct sigaction sa;
3625
3626 state.cr = Int_val (Field (pipe_v, 0));
3627 state.cw = Int_val (Field (pipe_v, 1));
3628 state.rotate = Int_val (Field (params_v, 0));
3629 state.proportional = Bool_val (Field (params_v, 1));
3630 trim_v = Field (params_v, 2);
3631 texcount = Int_val (Field (params_v, 3));
3632 state.sliceheight = Int_val (Field (params_v, 4));
3633 mustoresize = Int_val (Field (params_v, 5));
3634 colorspace = Int_val (Field (params_v, 6));
3635 fontpath = String_val (Field (params_v, 7));
3636 state.trimcachepath = strdup (String_val (Field (params_v, 8)));
3637 if (!state.trimcachepath) {
3638 fprintf (stderr, "failed to strdup trimcachepath: %s\n",
3639 strerror (errno));
3640 }
3641 haspboext = Bool_val (Field (params_v, 9));
3642
3643 state.ctx = fz_new_context (NULL, NULL, mustoresize);
3644
3645 state.trimmargins = Bool_val (Field (trim_v, 0));
3646 fuzz_v = Field (trim_v, 1);
3647 state.trimfuzz.x0 = Int_val (Field (fuzz_v, 0));
3648 state.trimfuzz.y0 = Int_val (Field (fuzz_v, 1));
3649 state.trimfuzz.x1 = Int_val (Field (fuzz_v, 2));
3650 state.trimfuzz.y1 = Int_val (Field (fuzz_v, 3));
3651
3652 set_tex_params (colorspace);
3653
3654 if (*fontpath) {
3655 state.face = load_font (fontpath);
3656 }
3657 else {
3658 unsigned int len;
3659 void *base = pdf_lookup_substitute_font (0, 0, 0, 0, &len);
3660
3661 state.face = load_builtin_font (base, len);
3662 }
3663 if (!state.face) _exit (1);
3664
3665 realloctexts (texcount);
3666
3667 if (haspboext) {
3668 setuppbo ();
3669 }
3670
3671 #ifdef __CYGWIN__
3672 sa.sa_handler = SIG_IGN;
3673 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP;
3674 #else
3675 sa.sa_handler = SIG_DFL;
3676 sa.sa_flags = SA_RESTART | SA_NOCLDSTOP | SA_NOCLDWAIT;
3677 #endif
3678 if (sigemptyset (&sa.sa_mask)) {
3679 err (1, "sigemptyset");
3680 }
3681 if (sigaction (SIGCHLD, &sa, NULL)) {
3682 err (1, "sigaction");
3683 }
3684
3685 ret = pthread_create (&state.thread, NULL, mainloop, NULL);
3686 if (ret) {
3687 errx (1, "pthread_create: %s", strerror (ret));
3688 }
3689
3690 CAMLreturn (Val_unit);
3691 }
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